000f Q4 2012 B 2.0 512 MB (Mfg by Qisda)
So I must have a Raspberry Pi Model B, from the 4th quarter of 2012.
Dug out my purchase emails... I order this around Feb/March 2013. Allied Electronics. I remember it was kind of iffy if they would actually ship them. People were concerned.
So maybe eventually, in 2020, I'll discover LInux has moved on and this hardware is no longer supported. That's what I was wondering about.