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That is an earlier Autolite 2100 from 1963, possibly the OEM. Fairly rare to still have the tag. Uses a checkball for the accelerator pump circuit in lieu of the later red umbrella lookin' deal. On the side of the airhorn "clock" it will have the venturi size. Stock was 1.02" for 292 truck engines.
Good carb, one nice thing about those pre '64 carbs is they take standard issue modern Holley jets (#48, 46, or 44 for the 292 truck applications depending on altitude) 7.5" (green) power valve is stock for 0-5k feet, 6.5", 5.5" etc