Voltage regulator for L1500

[fcoffman]

Hello all, I have 70's vintage L1500 with a blown voltage regulator. It's a nippondenso unit
with 3 lugs -
part number is 026000-2210
Can't seem to find one on the Internet

Anyone know a source for this quaint unit?
anyone have one rattling around in a drawer?
Appreciate any advice
Thanks