According to the PSA database, the requested certification number is defined as the following:

PSA Certification Verification

#71951377

ITEM INFORMATION

Certification Number71951377
Label Type with fugitive ink technology
Reverse Cert Number/BarcodeYes
Year1990
BrandFLEER
SportBASKETBALL CARDS
Card Number172
PlayerDAVID ROBINSON
Variety/Pedigree
GradeMINT 9