1 lx 2 weeks ago NFI.I don't ever recall seeing Western engraved hump blocks. And on a Round Up with G brand and blank horseshoe headstock. Arrow knobs and a shiny Melita. Yum.Edit: Just checked Ed Ball's Gretsch 6120 book and 1950's Gretsch Manual : no mention of these. Also, there were no '56 Round Ups. The 1955 #167xx batch did have humpblock markers; maybe this is one of those.