Pete,
Greenberg’s Guide (1945-1969) reads:
“2957 N Y C Circa 1946, originally manufactured 1940-42, refitted with postwar staple-end trucks with coil couplers by either Lionel service stations or owner. This caboose style, with considerable differences was revived by Lionel, Inc. in 1986 in New York Central and Boston & Albany versions.”