[Coco] Strange 26-3127B

[Joe Grubbs]

Hello All. I posted this on the Facebook TRS-80/Coco page but figured I should try here as well. I see a lot of familiar names between this list and that group, so if you've seen this, sorry for the repeat.

I recently acquired a pair of 64K 26-3127B Coco2s. One of them has a "Tandy" badge, was made in Korea, and has the awesome 6847T1 VDG. Groovy.

The other one is a bit of a misfit. It has a "Radio Shack" badge, is made in USA, and has a 20261043 motherboard inside. Note that this 20261043 is presumably the one for the Korean 26-3134/3136 16K CoCo2 according to my Googling. However it is 64K and has Tandy house-marked memory ICs (8) as well as what looks like a perfectly installed jumper in J1. It goes without saying that it merely has the 6847 VDG. In all of my web searching, I've not found mention of a similarly configured 3127B, though one site stated that the 3127Bs were a bit varied. 

It's not a big deal, but I'm just curious if anyone has seen this combination, or it's more likely mine has had its mobo swapped at some point in its ~30 year lifespan.

-Joe