Key to Abbreviations Listed Alphabetically
Abbreviation Meaning
"AN" Arabic numerals
"BS" Bunn Special
"cal" Caliber
"CT" Carat
"DES" Diamond endstone
"DMK" Damaskeening
"DR" Double roller
"DSD" Double sunk dial
"DWT" Pennyweight
"ET" Engine turned
"FS"Fine scratch
"g" Gram
"GCW" Gold center wheel
"GF" Gold-filled
"GJS" Gold jewel settings
"gr" Grade
"GRO" Good running order
"GWT" Gold wheel train
"H" Height
"HB" Hinge back
"HB&B" Hinge back and bezel
"HC" Hunting case
"hl" Hairlines
"HS"
Hairspring
"HWW" Henry W. Wheeler
"J" Jewels 14
"K" Karat
"KW" Keywind
"KS" Keyset
"L" Length
(L) Lever set
"LS" Lever set
"MB" Motor barrel
"MFS"Micro Fine Scratch
"mm" Millimeter
"MOP" Mother of pearl
"Mvt" Movement
NI Nickel
"NOS" New Old Stock
"NR" Not running
"OF" Open face
"OH" Overhall
"oz" Ounces
(P) Pendant set
"pg" Page
"PP" Plain polished
"PS" Pendant set
"PW" Pocket watch
"QS" Quick set
"ref" Reference
"RG" Rose gold
"RGF" Rose gold filled
"RGP" Rolled gold plate
"RN" Roman numeral
"RR" Rail road
16 "S" Size
"s#" Serial number
"SB" Screw back
"SB&B" Screw back and bezel
"SO" Swing out
"SS" Stainless steel
"SSD" Single sunk dial
"SW" Stem wind
"TP" Total Production
"TW" Total weight
"UFS"Ultra Fine Scratch (brushing)
"W" Width
"WE-SSDWhite enamel single sunk dial
"WED" White enamel dial
"WG" White gold
"WI" Wind indicator
"WW" Wrist watch
"YG" Yellow gold