Just found 2 Canon drop-in filter holders for 52mm screw in filters. I know from personal experience that these will work on Canon 500mm, 400DO and 300 lenses.
Each are in a separate plastic container and if memory serves me correctly never used.
I no longer own nor use a telephoto lens so no longer have any need for these. I actually completely forgot about these until I started looking for something else earlier this morning.
B&H price new for these is $84.95 each
These are for sale at $45.00 each. While I prefer payment via Paypal to a verified address I will however accept a check and will ship after it clears. Shipping/insurance is sole responsibility of the buyer.
These are in like new never been used condition.
Don
