It bears some similarities (although not many) with teletype print, but most likely it's a typeface developed specifically for "chain train" printers, and not something from a specimen book, and hence not likely to be a subject of revival...

Thank you! "Restraining Order" is perfect for the numbers 5,6,7,8,9, and 0, and I already have "letters.ttf" which matches 1,2,3,4 and the alphabet very nicely. Five through zero was the big hangup, and you solved that one. Thanks again!