Nifty! I remember building and painting mine about a decade later, in the late 1970's. I loved the conical nose cone & the black and white scheme...and wasn't there a silver fin, or am I totally mis-remembering?
FYI, if you didn't already know, Aerospace Specialty Products has these in every size from MMX to a 38mm! It really is such a classic design!
TLB, You are Correct! And yep, I'm WACKY for Wacs!!! I've built the ASP 29/38mm version , and the 18mm version.....AND the Semroc 18mm Wac which I set up for 24mm motors!!! It's just such a clean simple, good looking missile!!!!