Philadelphia police and the FBI are investigating the theft of two nearly 8-foot-tall stained-glass windows from the Disston House, a historic North Philadelphia mansion built in the 1880s.

The windows — measuring 42 by 94 inches, police said — were original pieces from the home’s construction in 1882. Located at 1530 N. 16th St., the building was constructed for a wealthy Philadelphia businessman, 6ABC reported.

It is now owned by the Unity Mission Church, property records show, but the station said services are not conducted at the building.

The mansion is listed on Philadelphia’s Historic Register.

Police said that a brass lamp fixture built into the staircase post was also taken during the burglary last Sunday. It is estimated to be nearly 100 years old.

Nothing else was taken, police said, though there was minor damage to a basement grate, which an officer said may have been the point of entry for the burglary.

Due to the historical value of the stolen items, police said, the FBI is involved in the investigation. Anyone with information can call Central Detectives at 215-686-3093. “We’ve got nothing yet,” a detective said Saturday night.