Patent ID: 8550239

Claim:
An adaptor for facilitating the stacking of PCGS and NGC coin holders each having a Certificate-Bearing-Side and a non-Certificate-Bearing-Side, the adaptor comprising: a substantially rectangular planar plate having a front side, a back side, and an outer circumferential side wall; said back side having first circumferential channel spaced inwardly from said outer circumferential side wall for mating engagement with the Certificate-Bearing-Side of an NGC coin holder, and a recessed area located inwardly from said first circumferential channel and sized and shaped for mating engagement the Certificate-Bearing-Side of a PCGS coin holder; said front side having second circumferential channel spaced inwardly from said outer circumferential side wall for mating engagement with the non-Certificate-Bearing-Side of an NGC coin holder, and a third circumferential channel partially overlapping said second circumferential channel and sized and shaped for mating engagement with the non-Certificate-Bearing-Side of a PCGS coin holder; whereby said adaptor may be disposed between and in mating engagement with normally incompatible PCGS and NGC coin cases to permit the stacking thereof one atop the other and further may be disposed between and in mating engagement with two PCGS coin cases or two NGC coin cases.