Is this a knock off Holley?

The list number says 3310-14 yet I can't find any reference to it on the Holley list number pdf. The number stampings look a little errr, The only references on the net to this model was a guy asking about the identification/confirmation of same model number carb and revision on the Holley site 9 years ago with no replies. That and one guy currently selling one that is from an estate sale.

Can anyone confirm if its real or knock off. Oh and I know it needs a longer mounting stud on the manifold

 

3310 is the list number of the 4bbl vac secondary 750 CFM carb that has been in production for decades. The -14 part of it means what revision it is. The circle with the 12 in it on top of the main body makes me think it was cast in 2012, but the date code 1023 means it was actually assembled on the 102nd day of 2013.

I don't see anything about it that makes me think it's fake.

 

https://www.ebay.com/p/12003207650
Holley 750

 

Thanks guys, I was a little concerned as the Holley site does not list this revision for ordering spares.