A fair number of clock parts (for much older clocks)
are either being
remanufacutred or made-to-order. You may well find a company that maks
glasses for clocks whoc could make soemthing for this unit. Be warned it
will not be cheap!
Yeah, so I figured. My best bet is to find a trashed IBM clock as a
glass donor.
A quick look at Google with "clock" "glass" "replacement"
tells me that
replacement curved glass is neither hard to find nor expensive. Here are
some that look good: