i think I found the partnumber, 123482-91291, just would like to make sure it fits all the 3ym30 fresh water ignition panels from the late 80s or whenever it was
I just picked up a spare set for our 3 GMD, for "just in case". These guys are local for us, and had the keys. Contact them, or I could run over there next week and mail to you.
If there is another cruiser near you with a Yanmar, maybe they have a spare that would fit?