ahhhhhhhhhhh defintely an 3 1/2 dmm chip like 7106
now it's a matter fo finding the 3 1/2 digits lcd glass ..... but if youre stuck maybe in this site or elsewhere panel meters with lcd .... some are very cheap on Ali or Ebay
https://www.circuitspecialists.com/panel-meterssomething could fit the hole
unless you find some markings on the lcd glass
many will come with pins, but ones with zebra strips .... harder to find
and the other may end up with the same problems ?
dont take the ones with some small mcu in them, most of them dont go at zero volts ... start at 3v and up, take ones with the same dmm ic,
you can or could find ones with almost the same bezel size and could snap in place ? or do a small adjustment ?