Looks like a 520 Koenig Jiffy Cab with vertical doors.
“Hard Top for Jeep
Brand : Koenig Iron Works , body division , Houston Texas
The design and build of this steel top is very hi quality.
-Roll up windows in doors
-sliding rear side windows
-stainless steel fasteners
-currently on a 1968 cj5
-will remove from my jeep when sold (currently on my jeep)”