1960’s Cler Watch ‘Aquastar’ (Serexa Watch Co. SA) 20ATM Diver Watch – ETA Cal. 2452


Out of stock

From circa 1965, an ‘Aquastar’ model 20ATM diver by Cler Watch (one of the brands of Serexa Watch Co. SA, registered in Basel, Switzerland in 1963) with an automatic 25j ETA Cal. 2452 movement that has been professionally inspected in-house by Localtime.

It is in honest/authentic condition throughout and ready to proudly wear or join your collection. The 38mm [41mm counting the  crown] stainless steel case is in unpolished condition and has only been lightly cleaned. The glossy black dial is a feast to the eyes. I have made many photos, including some closeup snapshots just for fun but also to allow you to enjoy the intricate details. This lovely watch is fitted with a same-period NOS tropic-style rubber strap in black.

As with all the watches I handle here at Localtime, the BIN price includes a written 3-month written warrantee from the date of purchase. Feel free to contact me for whatever questions you might have.

Extra: Try my Localtime rubber straps! Another line of rubber straps that I have found to be very comfortable and a great match especially for sporty or diver watches. They come in 6 sizes [18-20-22-24-26-28mm], 2 colours of rubber [black and navy blue] and 6 different colours of stitching [black, blue, orange, red, white and yellow]. The straps themselves have a smooth feel with a padded pattern on top and a ‘grooved’ pattern on the bottom. Their length is approximately 90mm on the buckle end [including the steel buckle] and 120mm on the tail end; so not short but not too long either. They have two floating keepers with the same smooth rubber feel. They can be purchased separately from eBay item number 132488046402  and you can also see them in the last photos here.


Cler Watch (Serexa Watch Co. SA, Swiss)

Production Period



'Aquastar' 20ATM Diver


Time, Date, Elapsed Time Bezel




ETA Cal. 2452

Case Material

Stainless Steel

Case Back

Stainless Steel

Case Size

38mm case, 41mm counting the crown at 3h

Lug Width



Pre-Owned & Working With Warrantee

Last Known Service

Inspected by Localtime – February 2018


Free Worldwide


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