These B&W DM10's were my first pair of proper speakers. They were launched in 1982 which is the time I bought them from a small independant hi-fi shop at Five Ways, Edgbaston in Birmingham (sadly no longer in business).
I kept these for just over 20 years and then gave them away. I'm sorely tempted to buy another pair just for nostalgia. I can't remember their stats but the cabinets are fairly large for standmounts â€“ about 19"h x 10"w. A very basic front ported bass reflex design with paper cones and very sweet tweeters (not metal domes, that black 'sticky-looking' stuff). Extremely honest speakers with no frills and as I remember, very little colouration. I wonder what they'd do in my system now? The one drawback was the single terminals only accepted very thin cables but may accept banana plugs.
A quick search revealed someone in New Jersey, USA is selling one speaker only (not a pair) for a BIN of $49.00.