I found this Beautiful LUDWIG MACH 5 kit on ebay. 22, 12, 13, 16. 3-ply shells Granitone Interior, Black cortex finish. Here's the thing all 4 drums have serial #'s that start with 174XXXX which to me says the kit is from 1978. I thought Ludwig discontinued the MACH 4 and MACH 5 kits in 1974/75. At least that's what I've read. Can anyone shed some light on this.

[ame]http://www.ebay.com/itm/Ludwig-MACH-5-black-cortex-5-pc-drum-set-vintage-70s-B-O-kit-Supraphonic-/131245701345?pt=Vintgae_Drums_Percussion&hash=item1e8eda78e1[/ame]