Hot Rods Vintage valve cover breathers

Can anyone identify this breather on the F.E. Ford cover ? Thanks.

 

G.T. sold by BELL Auto Parts in the 1960'S they made them in 90 degree as that one and also straight up. Same G.T. as the blower bearing plates sometimes listed as CRAGAR. Do you only have the one or a pair. I have a single and I am possibly looking for another

 

Well they do make repops of the GT beather.

 

Thanks for the reply's. They belong to a friend and he was thinking Holman/Moody stuff but I didn't think so.