Last year I bought a vintage automatic GUB 75 (Glashütte)Spezimatic wristwatch on eBay. It looks identical to the model shown on this page.
Googling indicates that the GUB 75 series was manufactured from 1964 to 1979 or 1980. I was wondering if there is any way of finding out what the original price would have been, if only approximately. I’m not a collector of antique watches—in fact, I don’t know the first thing about them—and bought this one only because I admire the design. I wear it daily now. I’m curious what it would have set me back if I had bought it new back in the day.