Description
Silver, blue enamel, 50 mm dia.
Signed on the dial: CH. F. Tissot & Fils / Locle
On the envelope engraved: To Paul Kowalski / In memory of Associates in Ulen & Co / Częstochowa / Poland July 4. 1928.
Ulen & Company, an American engineering firm. In 1928, it built waterworks in Czestochowa.
Asking price 1800
Estimate 2200 - 2500