Here’s my cousin rocking a Mets jacket back at Great Adventure like 35 years ago. My guess is this is 1976 or 1977.
Remember the olden times when this and a cap were the only kind of Mets gear you could even buy? A custom jersey of whoever you wanted was completely unheard of….really it was only about 12 years ago when that became a thing unless you went to Cosby’s over by MSG and dropped some coin.