Stag vinyl was very limited, the story goes that Atlantic only pressed
it once because they planned to drop the Melvins shortly thereafter.
To make up for the limited amount of copies, many deletes and
rejects like yours' found their way into the market. Some of them
had a photocopy insert because the manufacturer ran out of offset
printed inserts, and were too cheap to reprint them. There's also copies
of the vinyl out there with the hole punched off center as well.