When I ordered my first Meridian speakers in the 80s (M3's with 101pre-amp from Subjective Audio) I was given the option of 'bespoke' wood work cabinets and went for light natural ash over the standard finishes. The ordered light beige cloth front covers didn't materialise - it was said they showed too much of the drivers behind and so a darker brown was supplied. They did take significantly longer to deliver, of course, and I was told they had been remade several times as the finish hadn't been up to scratch initially. So even then Meridian were 'customising' their products - which I always took as a sign of a high end company looking after it's customers.
So that's no help on the date 'Select' became available sorry.

Chris