Exacct 1938- 1941 61 cu  small port replica Knucklehead cylinder head set ( with tins and cups installed ) feature original cast . Head set include valve seats not cut, Manifold screw and primer plug boss. Rocker brackets has a 45 Dergee chape reinforcement as original. The heads have all fins like original.
Brand is manufactured by Motortechnic Mfg. in Germany
NOTE:
Head are casted with numbers 119-35 front head 119-352 rear head and hall mark like original. Uses 1-3/8" large hex 18mm plugs. Valve seats and 61" intake nipples are installed. 
The mold was taken from original heads, you can not tell from the original