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
"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
"HWW"
Henry W. Wheeler
"J"
Jewels 14
"K"
Karat
"KW"
Keywind
"KS"
Keyset
"L"
Length
(L)
Lever set
"LS"
Lever set
"MB"
Motor barrel
"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
"W"
Width
"WG"
White gold
"WI"
Wind indicator
"WW"
Wrist watch
"YG"
Yellow gold