Vintage Dutch pushbar clock. The seller did not know any particulars on the history of the clock, but it could perhaps be an old Koopman clock from the early years. Henricus Koopman started with his first chess clocks in 1936 shortly after Max Euwe won the World Championship against Aljechin in 1935, which led to a chess boom in his home country and the rising need for chess clocks. You can see the pushbar mechanism on some of the pictures. There is something imprinted on the dial, but it was later covered with some kind of tape. The only word visible is "Schaakvereeniging", so it is likely that the clock belonged to a chess club. The details of the numbers (especially 3, 6, 9 and 12) resemble early Koopman clocks, as well as the word "Foreign" imprinted on the bottom of the clock face.