Around 4,000 63 and 63A units were built in total.
Between 1935 and the 1940 over 168,000 units were built.
About 20,000 units have been built between 1980 and the present.
Class 67 was a series of 18 units built from 1953 to 1955.
In the last five years, about 5,000 units have been built, or are being developed.
The unit is 1,348 square feet and was built in 1989.
So far, 220 units in the $220 million development have been built and sold.
All but 75 units have been built and sold, he said.
"Probably no more than 40 units will be built this year."
At that time, only 240 units had been built and sold.