[Overview]: The PRR leased a fleet of Reading T1 during the late 1940s, had the PRR ever purchased (Which They did not), they would probably look somewhat like this. The reason it would be called R2 because the PRR classified the 4-8-4 as "R" and the reason this would be called the R2 was because the PRR had a prototype electric R1 locomotive.
(Please note 2101 was never leased to the PRR) @Chessie-2101
