Build date is easy: 475 of the PRR's 598 2-10-0 engines were built in a single order by Baldwin in 1923 (I think all in 1923, but a few may have been in 22 or 24), and yours is one of these. (They were numbered in a single consecutive block.). So Toddsyr is right about the birthday. (The one I1s which has been preserved -- it's at a railway museum near Buffalo -- is thus one of your engine's "sisters": the 4483.)
Date of retirement... I don't know of a source for the retirement dates of individual PRR locomotives. But all 598 I1s were still on the roster in 1947 (the majority by then converted to I1sa -- revised valve gear -- but over a hundred still in original form), and some were among the last PRR steam locomotives in use (PRR ended steam operations in 1957). So early 1950s would have been late in the locomotive's career, but I can't help you narrow down the retirement beyond that. Sorry.
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(In the 1970s, when I was a graduate student at the University of Pittsburgh, the 4483 was "mounted" on a display track outside the Wabco -- Westinghouse Air Brake: still in the locomotive business! -- headquarters in a suburb of Pittsburgh, within sight of the ex-PRR main line. I visited it a couple of times, and so it's one of my favourite locomotives.)
