A quick question: when did Slingerland start first offering 5 ply shells? I thought it was 1978 or 1979? I noticed a set of concert toms on eBay with S/N's as low as 244xxx (black/silver Niles badge), which "seem" to put the manufacture like '77 (based on the "timeline")?? I own a Super Rock #51N (3 ply with reinforced rings, black/silver Niles badge) with S/N's from 217xxx to 225xxx. I always assumed that set was '75 or '76, based on the S/N and the years that particular outfit was made. Was the Super Rock Kit made in 1977?? I didn't think it was... I always wondered about the 5 ply, and thought I'd ask the experts!
Thanks!