Train 552 climbs the Mount Olivet grade west of Fresh Pond on the lower Montauk branch. Alco C420 locomotive 204 leads commuter club car 2003 OYSTER BAY, six coaches and bar car in this August 6, 1970 scene.
Photo by Richard F. Makse

Club car OYSTER BAY wearing MTA LIRR colors in the early 1970s.
Photo by Tim Darnell

The privately owned OYSTER BAY in faded MTA LIRR colors,
stored at the former St. Louis Union Station circa 1979-1980.
Photo from Facebook "St Louis MO Friends & Neighbors" group

The former OYSTER BAY has found a new home in Norvell Township, Michigan, where it adjoins a private residence. One can only speculate exactly how the current owner is "re-purposing" this car. Once can be more certain that the cost of moving the car from New York to Michigan by rail, and then moving it over the road to its current location, was a substantial expense.
Google Earth view, provided by Ed Frye