Mercedes-Benz hardtop.
Update: apparently this is the information that was received for what models this will fit:
1.) Mercedes R107 280sl, 350sl, 380sl, 450sl, 560sl. Fits Model years 1972-1989 it’s from a 1981+ car based on interior color.
2.) It fits on a 1973-1989. 380sl-450sl-560sl
Previously, it was unknown what vehicle this goes with or the part number. The only markings are on the glass as follows:
SEKURIT-1 F
D 287
DOT 27 M53 AS2
DGM 33757 VT
TP GS 78 240 002
Cracked back glass may be replaceable to restore this full shell back to serviceable condition.
Located in Lancaster, NY which is 5 miles east of Buffalo.