Can anyone give me any info on this vise? I picked it up for $20 this weekend. I'm not sure how old it is. What do the numbers mean in the 2nd pic?

For $20?  Was the seller blind?   Look at this closely, decently cast steel, good original red paint, MADE IN USA.  Five and a half inch jaws.   Now look at the offerings down to Harbour Fright.   The paint covers bondo that they use to smooth over grainy rough castings.   Now look up a new price for a similar vise, I think you will find the dollar amount the same as what I burn in gas in a month!   The numbers are obviously part numbers, body and jaw.  It isn't monstrously heavy as a Columbian from the 20s, but it's a very good hobby vise.   Age, am guessing, mid 60s to late 70s.   You did very well.  Congrats.

Thanks for the reply. You are correct, not real heavy, weighs 38lbs