Thank you, all !
@gb00s : Damn them! No consistency (between left & right char pos).
See actual displays of 00, 06, 19, 60. 67, 6D below
@nihonjin : While the DIMMs were known good (borrowed from my [LGA2066] workstation), both the CPU (newly-acquired eBay-used) & mobo (virginal, but ...) are...