1937 Ford cylinder head question

[Gary in La.]

I have a set of NOS cast iron heads that have p/n 77-6050A, no script, 18 mm spark plug holes, temp sensor provisions (with plugs) and no firing order on the casting. There is a small casting impression from the mold with "11-2" and another with "AL" in the center of the head. Believe these to be after market.