145.0012 Pre-Moon style or 145.0022 Modern replacement case backs

I'm looking for a couple of case backs for some potential signers for my collection. I'm looking for fair priced145.0012 Pre-Moon style or 145.0022 Modern case back replacements. Preferably used with the interior of the case back clean and free of scratches to keep the cost down but new is an option as well.

Please PM me with anything you might have available.

Cheers,

John