ORIGINAL 1971 Marvel Third Eye Amazing Spider-man Greeting Card:70's Marvelmania For Sale

This is a rare vintage ORIGINAL (NOT A REPRODUCTION) 1971 AMAZING SPIDER-MAN GREETING CARD, and it was produced under license for the Marvel Comics Group by THE THIRD EYE. This 70's Amazing Spiderman 3rd Eye greeting has never been used and it's in very fine/near mint condition (using comic book grading terms), with just a few minor imperfections.
NOTE: This 1970's Spider-man greeting card does NOT have the original envelope.
SIZE: This greeting card measures about 9.25 inches by 6 inches when unopened, and it features the artwork of silver age and bronze age artists GIL KANE and JOHN ROMITA SR.