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Hamilton / Model reference
Auto Cal Preston Compare the individual source configurations below with the watch you are identifying.
Named Hamilton model supported by non-rejected catalog evidence. Punctuation and spacing equivalents reconciled; numbered variants retained. Replacement sources do not establish watch offering dates.
A similar case or dial is a starting point. Check the documented configuration and any movement evidence before settling on an identification.
Documented source appearances 4 appearances Dates below belong to publications. Different specifications remain attached to their own source appearance.
1976
Hamilton · Hamilton Self-winding Quick Change Calendar and Self-winding — scan 8 (printed 8)
Auto Cal Preston
Self-winding Quick Change Calendar series; Stainless steel.
Band Bracelet illustrated
Family Self-winding Quick Change Calendar series printed
Dial color Blue printed
Date display Date window illustrated
Case material Stainless steel printed
Movement type Self-winding printed
Marketed gender men inferred
Water resistance Water resistant (historical printed claim) printed Historical price: USD 115.00 · unknown
1977
Hamilton · Hamilton Self-Winding Calendar and Electronic Day ’n Date series — scan5
Auto Cal Preston
Series:waterresistant,anti-magnetic;adjustable/replaceablebracelets. 17jewelIncablocshockprotectedmovement (series).
Band Bracelet printed
Family Self-Winding Calendar series printed
Jewels 17 printed
Dial color Blue printed
Date display Date printed
Case material Stainless steel printed
Movement type Selfwinding printed
Marketed gender men inferred
Shock resistance Incabloc printed
Water resistance Water resistant (historical catalog claim) printed
Magnetic resistance Anti-magnetic (historical catalog claim) printed Historical price: USD 115.00 · unknown
Undated publication
Hamilton · Hamilton Calendar Collection, Mens and Ladies Models — scan 3 (printed 15)
Auto Cal Preston
Stainless steel;WB (as printed);YB/WB retainedliteral ascaptioned.
Band Adjustable bracelet printed
Family Calendar Collection printed
Jewels 17 printed
Dial color Blue printed
Mainspring Lifetime unbreakable mainspring (historical printed claim) printed
Date display Quick change calendar;date window illustrated
Case material Stainless steel;WB (as printed) printed
Movement type Self-winding illustrated
Marketed gender men printed
Shock resistance Incabloc shock protection (historical printed claim) printed
Water resistance Water resistant (historical printed claim) printed Historical price: USD 135.00 · unknown
Undated publication
Hamilton · Hamilton Calendar Collection — scan14 (printed15)
Auto Cal Preston
WB;printed caption. Universal series claims:17jewel Incabloc;water resistant;quick change calendar;lifetime unbreakable mainspring;adjustable bracelets.
Band Adjustable bracelet printed
Family Calendar Collection printed
Jewels 17 printed
Dial color Blue printed
Date display Quick change calendar printed
Case material Stainless steel printed
Movement type Self winding illustrated
Marketed gender men printed
Shock resistance Incabloc printed
Water resistance Water resistant printed Historical price: USD 135.00 · unknown
