Mark me down for 520! Thanks to Andrew H. for the SGC 10 Elberfeld.
Sat at 512 (no variations) for a month - then decided to go for 520 'minus the big 4'. Lucky to find low grade/price O'Hara & Demmitts. Both from Net54 members!
I'm now done! No way I will try Magie etc... Unless those lottery numbers line up...
I will continue to upgrade a few and pursue other interests....