If coins are certified by a 3rd party grading service, then their standards apply.
1971-S Lincoln Cent Proof Penny 1C Red
1971 Lincoln Cent, MS 65/66, Red, 1971 Lincoln Penny, Birth Date
1971 S Lincoln Penny Memorial Reverse Proof RD DCAM Coin Pricing Guide
1971 S Lincoln Penny Memorial Reverse RD Coin Pricing Guide
Mavin Lincoln Memorial Unc Penny Red Bu Cents 1959 - 1974 P D S Set 38 coins with book
1970 Penny Coin Value (Errors List, D, S & No Mint Mark Worth)
1971 S Lincoln Penny Memorial Reverse RD Coin Pricing Guide
1971 S Lincoln Penny Memorial Reverse RD Coin Pricing Guide
RED PENNY. AND - WEAK STRIKE TO REVERSE CAUSING ISSUES TO of and E. ERROR COIN. I'm sure we can.
1971 D Lincoln Memorial Penny RED PENNY & ERROR COIN Weak Strike to Reverse E
Indian Head cent - Wikipedia
1971 S Lincoln Penny Memorial Reverse RD Coin Pricing Guide
Struck Thru Late Stage Capped Die 1971 S Lincoln Memorial Cent Coin AN – Robinson's Coin Town