I've been seeing these in that shop for the last ~ 4-5 years.
The shelves are not clean, moving things around in the shop will create marks, customers break things and drop them. "Age-related wear" can appear quite rapidly.
It's not a very posh shop.
![Wink ;)](http://www.glassmessages.com/Smileys/classic/wink.gif)
Sometimes, unscrupulous people will make marks with sandpaper to indicate "age".
I do have to keep quite a close eye on what turns up there.
![Smiley :)](http://www.glassmessages.com/Smileys/classic/smiley.gif)
Lots of it does make its way into fairs or auctions, described as something else.
Many years ago, I bought quite a lot of very nice Beranek there.
![Grin ;D](http://www.glassmessages.com/Smileys/classic/grin.gif)