That one was the second RPM I found.
My first find was a 1956-D RPM-001. When I asked about value for it, I was told then: "$2.50 in the circulated condition. $25 in BU condition." That was the last bag of circulated coins. I started searching BU rolls from then forward. I finished the bag of 1200 wheat cents, I saved the roll and searched it later three times to make sure I got all the varieties. Then re-sold the bag of circulated cents. (Best to search once. Then let some time go by and learn more. Search again, and later on again. Each time I searched found something I missed, as my knowledge expanded as time went by)