As long as the pins are not beyond the length of the film, you can use them for any neg, even a 35mm if you have a strip of film to mask.
I have several of these and negative carriers. When they were new they were quite a penny. But now you are competing with others for price. I have a couple of the competitors but think the Condit punch to be of very superior quality.
If you want to sell it, you might get $100 out of it.
If you think to use it, you may get quite a bit more value from it.
Cheers,