WIW Big block water pump housing...no date code?

[GrandpaKevin]

Going through some old parts and was wondering if this big block water pump housing is worth anything.

I have no idea what engine it came off of but I'm thinking it was a pre 1970 440.

I'm not an expert but have read about date codes on these?
This one doesn't appear to have a date code unless I'm looking at the wrong location.