I always thought Tutima was a larger company since I see many of their watches in stores and they do a lot of advertising, but when I look on ebay or sales forums, Sinns outnumber Tutimas by about 3:1. this includes German ebay.de btw.
So what's going on here? Does Sinn really make more watches than Tutima? or does Tutima make more and their owners just never want to sell them? :)