Car 4137 was an MP-54A1 third-rail commuter coach built by AC&F in 1930 as LIRR 1137. It was retired in 1972 and sold to Seashore, so it's been in Kennebunkport for longer than it was in service. The car never ran at Seashore, though, and over the past decade or two its condition had deteriorated markedly. It was offered to other organizations for preservation back in 2022 but found no takers.
This reduces the number of LIRR cars on the PNAERC list to four, but of those, one is a "tunneled" static display piece and a second has been deaccessioned by its owner. The only LIRR MP-54 that seems to be in solid condition is car 1149, on display at the fairgrounds in Syracuse. (There's also unusual double-deck trailer 200, preserved on Long Island.) MP-54s have not fared well in preservation; they seem particularly prone to rusting out, and their size and unsuitability for operation has meant they've rarely found homes except as "stripped" coaches on tourist railroads. There are 12 MP-54s on the PNAERC list when ex-PRR examples are included, but besides the three LIRR examples listed above, three are hulks due to be scrapped, five have been stripped of their electrical equipment and turned into tourist railroad coaches, and the remaining car is stored outdoors in rough shape.
Seashore's collection on the PNAERC list is now 186 pieces, and there are 2,090 cars on the list in total.












