I don't know how many copies were in the first printing. When that stock was getting low, the folks re-arranged the last four pages, increasing the number of images from 1088 to 1105. A couple of images at the end were re-numbered but almost all the revision was new material. The only change in the first 88 pages was to insert #854 1/2 COES KEY MODEL on pg. 67 -- mom had forgotten it -- I think they may have had something come up that interrupted them for a while.
The revision was dated 1992 and all subsequent printings were the same. One time mom told me that altogether they'd sold about 3,000 copies.