The glass in the windows (90% of the building) is the original glass.

All retain their original glass, making them far more valuable.

Much of the original glass was destroyed during the Protestant reformation.

The original glass, which has no such failure mode, remains clear after 50 years.

The original cosmishield glass was designed to last a thousand years.

The eastern end has kept much original glass, which is rare in England.

Some of the original coloured glass is still in the windows.

From the street it looked as if protective glazing had been placed over the original glass.

The windows of the church were still the original plain glass.

The windows had been covered because it was too expensive, when rents were low, to replace the original glass.