1975 series 15. I own 18 of the 30 stickers. I also have a checklist and a completed Puzzle.
Most stickers have a retail value of $10.00 with the exception of Bloodweiser which is $15.00. However, most can be had a for a few bucks each.
I do not own any today from the 1976 16th series (original final series) yet. Those are some very pricey stickers.
I do have one set of Topps Old School to show you that will make their debut on this blog next week. It is Old School Series 9 which Topps released online only last year 2020.