In message , at 11:40:15 on Mon, 30 Apr
2018, Richard J. remarked:

My main question would be - how can I tell if my card is an "old"
one?

Second-generation cards have a "D" before 'Mayor of London' on the back of the card. The "D" is white on a blue square. First-generation cards
don't have a "D".

Thanks. I'm second generation. I wonder what became of my definitely
first generation one? Must have lost it I suppose.
--
Roland Perry