Want to Buy WTB: Bay 1 orange or dark yellow filter....

I can get one on Ebay from some no name brand (plastic) $15 to the expensive Rollei $45. I am sure you have some Bay 1 filters laying around and don't use them anymore. Let me know what you have.

The walz brand filters seem good and do not seem to cost much,

With regard to those no-name plastic Bay 1s, I find they clip the corners a bit on my Yashica 124g. A comparison with one of the 'official' filters shows the transparent area is smaller in diameter and the the frame is higher. When I got a couple of them, they were $10 each, but I've since spent more to get better filters. I've gotten authentic Rollei filters for $20 to $25 on ePrey within the past year, but it takes patience, there doesn't appear to be many in circulation. (And some folks price them like they're made of gold.)