Omega Seamaster Automatic Waterproof Specials
Type	Calibre	Size (mm)	Beat	Production	Name	Year of Special Run
Gents Standard	352	28.1	19,800	1949~55	Neptune's Chariot	1954
	354	28.1	19,800	1952~55	Seamaster Golf	1954
	470	25	19,800	1955~57	Seamaster XVI	1956
	471	25	19,800	1955~57	Seamaster XVI	1956
Gent's Calendar	503	28	19,800	1956~60	Masonic	1957
	562	27.9	19,800	1959~66	w/Portrait	1964
	565	27.9	19,800	1966~73	Hard Metal	1970
Ladies Calendar	681	17.5	19,800	1963~73	Hard Metal	1970