What model are my DCM Time Window speakers if the seril numbers are 7677 & 7677?


I’m selling my DCM Time Window Speakers that I inherited from my father. Not sure about the model but I do know the serial numbers are 7676 & 7677. The speakers are very heavy and are 36 x 11 3/4 x 9 1/2. Anyone know what the model number are? Anyone want to buy them?

Also have NAD 3150 & 4150 for sale with a SONY carousel CD player and Akai cassette deck.

buffs
I use to sell dcm .If i could see them they were great speakers.
They made a time window.... then came out with a 1 and a 3 
they also made excellent time frames the 750 and 2000 were great.They all were transmission design .The time window 3 sounded great and just ripped .. 
good luck ]
they were also mirror imaged hense the numbers

Funny, after all these years I only thought about my Time Windows yesterday, when I replied to post about how old speakers may sound great with today's electronics. Then today, here's an inquiry about the Time Windows.

I was under the impression that Time Windows is the name of the DCM model. I purchased mine in 1977. However, I don't remember them being very heavy.
Kenny