My customer has scrubbed the model number off the tag, but I've
narrowed it down to either a Sharp R-4A73 or R-5A43.
It needs a keypad, and one of them is going to be NLA, so if you have
a NOS or used one, I'd likely buy it.
In case you have this / these service manuals (or one of these ovens)
you could match it against my photo here:
Thanks very much for any help.
William E. Miller, AS-EET
email@example.com † http://www.MicrowaveDisplay.com
Microwave Oven Control Panel Repair Nationwide $39.95