Thanks for this. I'm replying here and then to the above and then again to myself. Forum is limiting me to 5x / 24 hours now, so I will not get my 10th post until today and then the 11th, should allow me to post photos.

Again thanks. As for the SN, um, good thought. I'm a bit embarrassed I didn't think of it. Went out to the garage today and thought it'd be easy. Not so much. There are a whole mess of numbers and letters stamped on there in multiple directions. Tomorrow, I'll post a photo.

For now, this is what I think they say:

Going in the direction of the BB spindle, there is stamped the following: WTU 1322706R
Going in the direction perpendicular to above is stamped (in various places): "T BI" also "720 23 - 0" also "T BT - 0 07" -- that last one is a bit ambiguous due to the shallowness of the stamp and the multiple overlaying stamps.

Based on this and the link you gave, I'm still at a loss. ¯\_(ツ)_/¯