Not a full-wall ocean scene, but it could be. This "Monterey Bay" backdrop for a diorama was from an advertisement and flipped to put the rocks on the right side.
Of course a B&O office car at Monterey Bay would be highly unusual, but company President Daniel Willard liked to play golf and frequently used his B&O office car when traveling, usually to Florida.
This setting is more famous being where Beebe and Clegg's private car "Virginia City" was parked during a golf tournament at Monterey in the mid-1950's.
S. Islander