Brought them home today.
Seller had got them from his boss 3 years ago and never used them, didn't know what they were outside of "klipsch" and that they were big.
I was really surprised after seeing those couple photos how clean they are. Walnut is in very nice shape, not all dried out, very minimal scratches or knicks, grills are really clean.
SN# 29W509 & 29W510
Looks like they were built early 1981 based on the info from Bob Crites site.
Now to make room and get them hooked up.