You will be able to tell the difference. 'Vintage' is not a very descriptive term. I have 'vintage' blacks from around 1995 that aren't particularly smooth. You might have a hard time telling between those and modern ones. However, I also have a NIB board from 1990 with blacks, and that is very smooth, almost perfect. And then I have Nixdorf switches from 1988, which are perfect. Basically, the older the better. 1990 and older is the gold area.