Looking for a source for a 32mm push on lens filter accessory that would fit a Yashica A. Also does anyone know if in fact the accessory could then be attached to step-increaser ring to attach a regular screw on filter?
I know of no commercial adapter of the type you require.However it is quite easy to produce a DIY item using an empty push on mount joined to a step up ring by an annulus of black styrene sheet.The styrene sheet is sold by all model shops and you use epoxy to assemble the parts.
I have not used this method for a push on fitting,but have made a number in the more normal screw mounts.They were to allow the attachment of very large diameter special filters to 46/49/52mm threads.This was for scientific work and the stacking of numbers of step up rings would have caused all kinds of problems.
Try the following Collectible Cameras (Sandy Ritz) 1305 East Northern Ave Phoenix,AZ 85020 1-602-944-2112 (phone) They have a fair number of old adaptors of various makes and sizes. You could get lucky.
