Pentax 6x7 Y48(Y2) 77mm Yellow Contrast Filter. Moderately good condition. Glass has dust but looks good. Frame has wear marks, specifically around the bayonet. The bayonet itself is damaged and missing a piece on one side (see photos). I don't have a lens to test this with, so I don't know if the filter will remain secure or not. So selling this one AS IS.

Thanks for looking.