The breather looks like a Moon style, the way it mounts is unusual. I don't have in my hands yet, this pic is all I have. I want an old set for my project.

Finned Aluminum cover for 1964 and 1965 "K" Head, probably used on a top fuel or funny car, maybe made by Mickey Thompson, Cal Custom, Ed Pink, Kieth Black? lots of manufacturers back then, look inside for name or part number. The breather is the type most used on Fuel/alcohol cars. Nice looking part, quite valuable if you have a pair, nice wall hanger too. Davey is interested for wall hanger...

Yep, 64/65 only K-Head version. Cool piece for the wall for sure.

Well, there is a pair. I'm horse tradin' for them, but I wanted to use them on my engine. So if I can get these. I'll be in the market for a pair of M/T's that will fit the later style heads.

What are you guys seeing to tip you off that this is for a k-head style? I usually just look at the rails, but can't see them in this picture. The cast in clearance on the exhaust side is pretty cool.

I think pic shows enough of the "curve" of a K style cover. Upper right corner

K - Head, 100%. Yes, the upper right corner contour is the tip off in that pic.

what kind of baffeling is under the breather ? i have always wondered that.

I see it now, thank guys.