I have a 3910 holley dated 724. I believe this is a real carb and not one of those new repos. can anyone give me a definite answer from looking at the pics? I have more. It also has 785 stamped into it in the air horn in a couple of places.There is also 2 tiny tapped holes in the sides of the air horn. One stamping is right onto the date but it's very light. If it is real , what is it worth. Thanks

Look's to be 4th week of January 1967
Here's one to compare stamping to:
http://www.chevellestuff.com/qd/images/3916143.jpg

I see some of the same anomalies in both stampings... which would indicate that they are either both real (probably) or both fake... (unlikely)

Date would be 4th week of February... :yes: