Holley 1920 carburetor identification HELP!!

The 12R-4285B and 12R-4328B are the casting numbers so ignore those.

Looks like the pix are mixed: do 1 and 4 belong together? If so, and since that carb has the flat accelerator pump shaft, I am thinking it is this kit:

http://www.carburetor-parts.com/Holley-1920-Carburetor-Repair-Kit-wFlat-Shaft_p_821.html

The 4712 appears in the "list of List #'s " for this carb kit. The fact that it is the 2nd group of 4 numbers in the pair of numbers matches up with my list number (though they are on a completely different part of the carb).

The other would be the 1394 list based on that ordering of number sets but that does not compute. That is a Holley 1904 that has a similar bowl but the rest does not look right: see here:
http://www.tocmp.com/manuals/Carbs/Holley/MasterList/

Do you have any large pix of that 2nd carb? In the 3rd pix above, what are the number inside the little inset circle in the lower rigth hand corner of the pix? 1920 or ??