Beseler glassless 35mm negative holder, product number 8302. I have two (2) of these for sale.
One Beseler glassless 35mm slide holder, product number 8305.
I have no idea of the compatibility of these -- what enlarger they will or won't work with, as I got these with an Omega enlarger as part of a lot.
Take all three for $30 plus $12 shipping within the continental US.
PayPal only -- thanks.