i have only seen a few 1-18s over the years; 1st was in 1979,
an avocado one some friends had-with the front panel off!-that
was a delight to watch the mechanism operate!
2nd was a coppertone window lid version i was given in 1982;
presuming something was wrong with it,i stripped it down for
parts and technical examination only to find out later it was
good-they just wanted a new washer!i still have a roller and
the motor pulley from it.
3rd was a poppy red '79 found at the dump in '97,partly
dissasembled and bent up,i almost grabbed it anyway..
They still seem to turn up for sale from time to time,so one
might suddenly appear within fetching distance...
At the dump '82-84,did not see a single 1-18-but there were
lots of rollermatics there