Somone wants to sell this to us for 80 and it is in good condition. However, did Nelson actually design this clock and to those with the extensive catalog resource what year was this produced.
Lastly, the image provided is off of google and our potential clock has a white backing. I have considered getting a pendulum for quite some time..... Blessings
The above clock
was #557, designed by Arthur Umanoff Associates and in 1974, it sold retail for $135.00!
557A was wine red
557C was matte black (yours)
557D was avocado
There most certainly was a 557B, but by 1974, it had been discontinued. I don't know the exact date it hit the street.
I own the red one, and love it. Buy it, by all means.
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