Index of Abbreviations & Lettermarks
The following index identifies manufacturer abbreviations, initial marks, and related lettermark formats used on pocket watches and cases.
| Abbreviation/Mark | Manufacturer Type | Associated Manufacturer | Alternative Formats |
|---|---|---|---|
| A.F.W.C.Co. | Case | American Filled Watch Case Co. | AFWCCo, A. F. W. C. Co., A F W C Co |
| A.T.&Co. | Case | Appleton, Tracy & Co. | AT&Co, A. T. & Co., A T & Co |
| A.W.C.Co. | Case | American Watch Case Co. | AWCCo, A. W. C. Co., A W C Co |
| A.W.C.Co. | Case | American Watch Case Co. of Toronto, Ltd. | AWCCo, A. W. C. Co., A W C Co |
| A.W.Co. | Watch | American Watch Co. | AWCo, A. W. Co., A W Co |
| A.W.Co. | Case | American Watch Co. | AWCo, A. W. Co., A W Co |
| A.W.W.Co. | Watch | Waltham | AWWCo, A. W. W. Co., A W W Co |
| A.W.W.Co. | Case | American Watch Co. | AWWCo, A. W. W. Co., A W W Co |
| B.&B. | Case | Bates & Bacon | B&B, B. & B., B & B |
| B.&Co. | Case | Booz & Co. | B&Co, B. & Co., B & Co |
| B.&Mc. | Case | Butler & McCarty | B&Mc, B. & Mc., B & Mc |
| B.&S. | Case | Blauer & Sperry | B&S, B. & S., B & S |
| B.&T. | Case | Booz & Thomas | B&T, B. & T., B & T |
| B.A.&Co. | Retailer | Benjamin Allen & Co. | BA&Co, B. A. & Co., B A & Co |
| B.H.&T. | Case | Booz, Hagstoz & Thomas | BH&T, B. H. & T., B H & T |
| B.K.&Co. | Retailer | Bigelow Kennard & Co. | BK&Co, B. K. & Co., B K & Co |
| B.Mc.C.&Co. | Case | Butler, McCarty & Co. | BMcC&Co, B. Mc. C. & Co., B Mc C & Co |
| B.S.W.C.Co. | Case | Bay State Watch Case Co. | BSWCCo, B. S. W. C. Co., B S W C Co |
| B.S.W.C.Co. | Case | Brooklyn Standard Watch Case Co. | BSWCCo, B. S. W. C. Co., B S W C Co |
| B.W.B.&Co. | Case | Unknown (B.W.B.&Co.) | BWB&Co, B. W. B. & Co., B W B & Co |
| B.W.C.Co. | Case | Brooklyn Watch Case Co. | BWCCo, B. W. C. Co., B W C Co |
| B.W.C.F. | Case | Brooklyn Watch Case Co. | BWCF, B. W. C. F., B W C F |
| B.W.Co. | Case | Boston Watch Co. | BWCo, B. W. Co., B W Co |
| C.&A.P. | Case | C. & A. Pequignot | C&AP, C. & A. P., C & A P |
| C.&B. | Case | Courvoisier & Berthoud | C&B, C. & B., C & B |
| C.&F. | Case | Cooper & Fellows | C&F, C. & F., C & F |
| C.&M. | Case | Crosby & Mathewson | C&M, C. & M., C & M |
| C.&M. | Case | Courvoisier & Mathey | C&M, C. & M., C & M |
| C.&W. | Case | Courvoisier & Wilcox | C&W, C. & W., C & W |
| C.E.H.&Co. | Case | Chas. E. Hale & Co. | CEH&Co, C. E. H. & Co., C E H & Co |
| C.J.&Bro. | Case | C. Jacot & Bro. | CJ&Bro, C. J. & Bro., C J & Bro |
| C.S. | Case | Charles Schwitter | CS, C. S., C S |
| C.W.C.Co. | Case | Chicago Watch Case Co. | CWCCo, C. W. C. Co., C W C Co |
| C.W.C.Co. | Case | Crescent Watch Case Co. | CWCCo, C. W. C. Co., C W C Co |
| C.W.Co. | Case | California Watch Case Co. | CWCo, C. W. Co., C W Co |
| C.W.Mfg.Co. | Case | Courvoisier & Wilcox Mfg. Co. | CWMfgCo, C. W. Mfg. Co., C W Mfg Co |
| C.W.S. | Case | Unknown (C.W.S.) | CWS, C. W. S., C W S |
| Chicago. | Case | Chicago Watch Case Co. | Chicago |
| D.&Co. | Case | Durand & Co. | D&Co, D. & Co., D & Co |
| D.&Co. | Case | Duhme & Co. | D&Co, D. & Co., D & Co |
| D.&Co. | Watch | Dean & Co. | D&Co, D. & Co., D & Co |
| D.D.D.D. | Case | Dubois Watch Case Co. | DDDD, D. D. D. D., D D D D |
| D.F.C.&Co. | Case | David F. Conover & Co. | DFC&Co, D. F. C. & Co., D F C & Co |
| D.T.W.&Co. | Case | D.T. Warren & Co. | DTW&Co, D. T. W. & Co., D T W & Co |
| D.W.C.Co. | Case | Denver Watch Case Co. | DWCCo, D. W. C. Co., D W C Co |
| E.F.M. | Case | Eugene F. Margot | EFM, E. F. M., E F M |
| E.N.W.C.Co. | Case | Elgin Watch Case Co. | ENWCCo, E. N. W. C. Co., E N W C Co |
| E.N.W.Co. | Watch | Elgin | ENWCo, E. N. W. Co., E N W Co |
| E.T.&Co. | Case | E. Tracy & Co. | ET&Co, E. T. & Co., E T & Co |
| E.V.R. | Retailer | E.V. Roddin & Co. | EVR, E. V. R., E V R |
| E.W.C.Co. | Case | Eastern Watch Case Co. | EWCCo, E. W. C. Co., E W C Co |
| F.&Co. | Case | Fellows & Co. | F&Co, F. & Co., F & Co |
| F.&M. | Case | Unknown (F.&M.) | F&M, F. & M., F & M |
| F.&S. | Case | Fellows & Shell | F&S, F. & S., F & S |
| F.D.&Co. | Case | Francis Dubois & Co. | FD&Co, F. D. & Co., F D & Co |
| F.E.B. | Case | Unknown (F.E.B.) | FEB, F. E. B., F E B |
| F.M. | Case | Unknown (F.M.) | FM, F. M., F M |
| F.M.&Co. | Case | Unknown (F.M.&Co.) | FM&Co, F. M. & Co., F M & Co |
| F.W.C.Co. | Case | Fahys Watch Case Co. | FWCCo, F. W. C. Co., F W C Co |
| F.W.C.Co. | Case | Fidelity Watch Case Co. | FWCCo, F. W. C. Co., F W C Co |
| G.B.&Co. | Retailer | Giles Brothers & Co. | GB&Co, G. B. & Co., G B & Co |
| G.E.&S. | Case | Gale, Eaton & Snow | GE&S, G. E. & S., G E & S |
| G.P.&Bro. | Case | Gigon, Pequignet & Bro. | GP&Bro, G. P. & Bro., G P & Bro |
| G.W.L. | Case | J.A. Brown & Co. (G.W. Ladd) | GWL, G. W. L., G W L |
| H.&Co. | Case | Harper & Co. | H&Co, H. & Co., H & Co |
| H.&T. | Case | Hagstoz & Thorpe | H&T, H. & T., H & T |
| H.Bros. | Retailer | Howard Bros. | HBros, H. Bros., H Bros |
| H.G.G. | Case | Hibbard G. Gill | HGG, H. G. G., H G G |
| H.W. | Case | Unknown (H.W.) | HW, H. W., H W |
| H.W.Co. | Watch | Hampden | HWCo, H. W. Co., H W Co |
| I.W.C.Co. | Case | Illinois Watch Case Co. | IWCCo, I. W. C. Co., I W C Co |
| I.W.Co. | Watch | Illinois | IWCo, I. W. Co., I W Co |
| J.&A. | Case | Juergens & Andersen | J&A, J. & A., J & A |
| J.&C. | Case | Jacot & Courvoisier | J&C, J. & C., J & C |
| J.Boss. | Case | J. Boss | JBoss, J. Boss., J Boss |
| J.F. | Case | Joseph A. Feiner | JF, J. F., J F |
| J.H. | Case | John Henry | JH, J. H., J H |
| J.M.H. | Case | J.M. Harper | JMH, J. M. H., J M H |
| J.P.C. | Case | Unknown (J.P.C.) | JPC, J. P. C., J P C |
| J.S. | Case | Jeannot & Shiebler Watch Case Co. | JS, J. S., J S |
| J.W.P.&Co. | Case | Unknown (J.W.P. & Co.) | JWP&Co, J. W. P. & Co., J W P & Co |
| K.&B. | Case | Unknown (K.&B.) | K&B, K. & B., K & B |
| K.&U. | Case | Keller & Untermeyer | K&U, K. & U., K & U |
| K.B.&M. | Case | Unknown (K.B.&M.) | KB&M, K. B. & M., K B & M |
| K.E.&F.Co. | Case | Keller, Ettinger & Fink | KE&FCo, K. E. & F. Co., K E & F Co |
| K.U. | Case | Keller & Untermeyer | KU, K. U., K U |
| K.W.C.Co. | Retailer | Keystone Watch Case Co. | KWCCo, K. W. C. Co., K W C Co |
| K.W.C.Co. | Case | Keystone Watch Case Co. | KWCCo, K. W. C. Co., K W C Co |
| L.&A.M. | Case | L. & A. Mathey | L&AM, L. & A. M., L & A M |
| L.&M.K. | Case | Unknown (L.&M.K.) | L&MK, L. & M. K., L & M K |
| L.&S. | Case | Lissauer & Sondheim | L&S, L. & S., L & S |
| L.B. | Case | Lungren & Bell | LB, L. B., L B |
| L.B.&Co. | Retailer | L. Bauman & Co. | LB&Co, L. B. & Co., L B & Co |
| L.H.&Co. | Case | L. Herzog & Co. | LH&Co, L. H. & Co., L H & Co |
| M.&B. | Case | Mathey & Bro. | M&B, M. & B., M & B |
| M.B. | Case | Margot Bros. | MB, M. B., M B |
| M.C.E.&Co. | Retailer | M.C. Eppenstein & Co. | MCE&Co, M. C. E. & Co., M C E & Co |
| M.H.C. | Case | Michael H. Cronin | MHC, M. H. C., M H C |
| Mc.C.&H. | Case | McCarty & Hurlburt | McC&H, Mc. C. & H., Mc C & H |
| N.W.J.Co. | Case | N.W.J.Co. | NWJCo, N. W. J. Co., N W J Co |
| N.Y.G.W.C.Co. | Case | New York Gold Watch Case Co. | NYGWCCo, N. Y. G. W. C. Co., N Y G W C Co |
| N.Y.W.C.Co. | Case | New York Watch Case Co. | NYWCCo, N. Y. W. C. Co., N Y W C Co |
| N.Y.W.Co. | Case | New York Watch Case Co. | NYWCo, N. Y. W. Co., N Y W Co |
| O.B.&V. | Case | Oppenheimer Brothers & Veith | OB&V, O. B. & V., O B & V |
| P.&B. | Case | Peters & Boss | P&B, P. & B., P & B |
| P.A.G.I. | Case | P.A. Giannini | PAGI, P. A. G. I., P A G I |
| P.B.&Co. | Case | Peters, Boss & Co. | PB&Co, P. B. & Co., P B & Co |
| P.D.&K. | Case | Pforzheimer, Dreyfus & Keller | PD&K, P. D. & K., P D & K |
| P.K.&Co. | Case | Pforzheimer, Keller & Co. | PK&Co, P. K. & Co., P K & Co |
| R.&F. | Case | Robert & Foster | R&F, R. & F., R & F |
| R.L.&M.F. | Retailer | R.L. & M. Friedlander | RL&MF, R. L. & M. F., R L & M F |
| R.S.P. | Case | Reese S. Peters | RSP, R. S. P., R S P |
| R.W.Co. | Watch | Rockford | RWCo, R. W. Co., R W Co |
| Roy&Co. | Case | Roy & Co. | Roy&Co, Roy & Co., Roy & Co |
| S.&D. | Case | Serex & Desmaison | S&D, S. & D., S & D |
| S.&F.M. | Case | Unknown (S.&F.M.) | S&FM, S. & F. M., S & F M |
| S.&M.B. | Case | Serex & Maitre Bros | S&MB, S. & M. B., S & M B |
| S.&R. | Case | Serex & Robert | S&R, S. & R., S & R |
| S.H.H.P. | Case | S.H.H. Penton | SHHP, S. H. H. P., S H H P |
| S.W.C.Co. | Case | Star Watch Case Co. | SWCCo, S. W. C. Co., S W C Co |
| S.X. | Case | Essex Watch Case Co. | SX, S. X., S X |
| T.&S. | Case | Thiery & Serex | T&S, T. & S., T & S |
| U.S.W.C.Co. | Case | United States Watch Case Co. | USWCCo, U. S. W. C. Co., U S W C Co |
| W. | Case | Benjamin J. Warner | W |
| W.&S. | Case | Warren & Spadone | W&S, W. & S., W & S |
| W.B.W.&Co. | Case | Wm. B. Warne & Co. | WBW&Co, W. B. W. & Co., W B W & Co |
| W.J.J.Co. | Retailer | W.J. Johnston Co. | WJJCo, W. J. J. Co., W J J Co |
| W.P.&Co. | Case | Wheeler, Parsons & Co. | WP&Co, W. P. & Co., W P & Co |
| W.P.&H. | Retailer | Wheeler, Parsons & Hayes | WP&H, W. P. & H., W P & H |
| W.S.&Co. | Case | Warren, Spadone & Co. | WS&Co, W. S. & Co., W S & Co |
| W.W.C.Co. | Case | Wadsworth Watch Case Co. | WWCCo, W. W. C. Co., W W C Co |
| W.W.C.Co. | Case | Willemin Watch Case Co. | WWCCo, W. W. C. Co., W W C Co |
| W.W.C.Mfg.Co. | Case | Western Watch Case Co. | WWCMfgCo, W. W. C. Mfg. Co., W W C Mfg Co |