Chicago Transit Authority

It didn't show a date, so I suspected it was a later pressing, although it looks like something from the 70s ( just a guess ). I think you're right.

Surprise! My wife had her original album stored in a closet. She dug it out and I cleaned it. It has some light scratches on it, but not bad so I played it, and we both couldn't believe how good it sounded. It was way better than the SACD. What a pleasant surprise, I didn't even know she had that record. So tablejockey, slaw, and the rest of you guys, Thanks.

If you're ever curious of its provenance,  check the runout  info on discogs
as mentioned earlier.
https://www.discogs.com/Chicago-Transit-Authority-Chicago-Transit-Authority/master/83123

Original presses are not a guarantee for "best" SQ, but always a sure bet to put them on your list of what to check out. 

Thanks.

I looked at the album cover and it is a Columbia PG 8. the record is GP8. Side A is XSM 139684. The etched number is XSM139684 - 1AE with a thin AF after it. I couldn't find those exact #s, but I'll keep checking.