How to remove printed ink from glossy card?

[archiethere]

I recently passed a online course, And after i had printed my certificate I had left it in the printer to dry. And because my printer feeds the paper out upside down, my partner thought it was blank! so she has printed over it. Unfortunately the card was the last piece and when i went to the shops they only sell this in packs of 20 (which are quite expensive) so just out of curiosity i was just wondering if there is anyway of removing the ink without damaging the original document?
Many thanks for your time.