cavelamb wrote:
Best I can do ...
Start he
Garmin products/obsolete
(It's here I found mine too...)

https://buy.garmin.com/shop/shop.do?cID=168
Thanks but I've exhausted all known possible sources both in the US and
the UK.

Bruce's "man" could be a treasure.

I've managed to ferret out a few chips on Ebay and Craigslist, but still
have a few holes in the coverage.

Brian C