According to the PSA database, the requested certification number is defined as the following:
#42657031
1990 PRO SET #633 DAVID RICHARDS ERROR-BACK SAYS G-T
Item Grade
NM 7
Item Information
- Cert Number
- 42657031
- Item Grade
- NM 7
- Label Type

w/ Fugitive Ink Technology
- Reverse Cert/Barcode
- Yes
- Year
- 1990
- Brand/Title
- PRO SET
- Subject
- DAVID RICHARDS
- Card Number
- 633
- Category
- FOOTBALL CARDS
- Variety/Pedigree
- ERROR-BACK SAYS G-T
Set Registry
This cert does not appear in any sets.
Note: If you believe the label on your cert or the item information listed above appears to be incorrect, please file a Label Correction Request through the Customer Request Center.