The Vintage Wrist Watch Company has dated this piece to the 1950s.
The watch has a 28.5-1 bumper automatic movement which was in production from 1944 until 1953. The movement is fully signed and the serial number 2788518 dates it back to 1952. The movement is working nicely.
Later automatic watches have the fully rotational rotor.

The watch measures 33mm diameter excluding the winding crown and the lugs. The case is stainless steel and it is in good condition. The inner case back is signed with the Chs Tissot logo. Original Tissot winding crown.

The lens is in good condition.
The signed dial is in its original finish. It probably would have had painted detail to the numbers but this has been removed over the years. There is light freckling across the dial.
A new leather strap has been fitted.
The watch comes in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1950s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page