Unknown Packard Instruments PCB

I need some help.  I have a PCB that I can't identify and I am hoping someone can shed some information on this. It is a Packard Instrument PCB from 1971.  It has the numbers 7100398 and 5065082 on the board.  There are 7 RCA DR-2110 Numitron tubes soldered to the fron and each one seems to be driven by an EL-RAD X72-333.  There is also one AMD  IC with the markings 930159x 7317 and a TI M 7523 SN7446AN.

I am guessing that this is part of either a counter or a calculator of some sort.  Specifically, I would like to know what this device is from and what the EL-RAD components did.  I can't seem to find much information on either one.  If you have any guesses, please leve a comment below!

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