1960s International "Aquatimer" 2nd Generation Ref.816AD Black Dial

Manufacturer International
Model Aquatimer
Year of Manufacture 1960s
Reference no. 816AD
Product no. B-9884
This is a late 1960s masterpiece from International - the "Aquatimer" 2nd Generation Ref.816AD with a black dial. Introduced in 1968, the Ref.816 featured a water resistance of 300mm, which was impressive at that time. It showcased an impactful design with a screw-back waterproof case and dial color variations, reminiscent of the style seen in the 1970s. The watch boasts a high level of craftsmanship, equipped with the in-house Cal.8541B movement, which includes a quick-change mechanism for the calendar and a hacking feature.
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Item details

Serial no. 1,867,***
Caliber 8541B
Movement no. 1,829,***
Movement type Automatic
Material Stainless Steel
Case size 40mm
Case type Screw-back,Water-resistant
Dial original
Type of Indices Luminous & Applied
Belt non Original (between lugs 22mm) / GF TYpe-3 Mirror
Evaluation case 93%
Evaluation dial 93%
Evaluation mov 93%
Condition 4.5
Rarity 4.5

Other details

Case: There are some minor scratches and age-related wear, but the watch retains its original shape and volume, which is massive and solid. The inner bezel has no movement problems.

Dial: Slightly aged, but clean with no noticeable scratches or stains.

Movement: The winding, calendar mechanism and hacking functions are in good condition. Accuracy is around 20 seconds per day.