Haven't been on here much, but the Atlas (made by Rivarossi) was limited to these examples:
2621 PRR Heavyweight Pullman Tuscan Red (Brown)/Yellow "James Logan"
2622 PRR 342 Heavyweight Combine Tuscan Red (Brown)/Yellow
"The Pennsylvania Limited - New York Chicago"
2623 PRR 1184 Heavyweight Diner Tuscan Red (Brown)/Yellow
2624 PRR 4496 Heavyweight Observation Tuscan Red (Brown)/Yellow "Pullman"
Rivarossi also made the coach and Full Baggage as described, and these were also sold by Con Cor.
One example listing is from a shop I use here in the UK: https://www.hattons.co.uk/331316/Riv...ockDetail.aspx
I know they exist I have five of them.