Vintage Antique Stained Glass Window Panel 1870-1881

Window panel from 1881 Church in Harrisburg, PA. We salvaged 8 of these windows. A local historian and author claims and references in his book they are most likely Tiffany however I have not verified this. Perhaps an expert here can help, please feel free to message me.

The panels are approx 29" tall by 41.5" wide and the frame is 2 thick. Often considered the innovator who introduced opalescent glass to windows in the 1870s, creating layered, richly colored, and artistic windows. Began his work in decorative arts in the late 1870s, later becoming a major competitor to La Farge in creating, patenting, and popularizing opalescent and "Favrile" glass.

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