Gramercy park light fixture Geringer and sons

Gramercy Park Lighting co. was located in the Bronx, NY about two blocks from Yankee Stadium.  The lamp you have was made on the production line as opposed to some of the more labor intense pieces that were made in the Tiffany department where I used to work from roughly 1973 to 1976 or 77.  About 1975 the company moved its operation to Peekskill NY in with the parent company Geringer and Sons Manufacturing co., a division of Instrument systems Corporation.

They went out of business probably around 1978

I'm not sure when the company opened.  I was first aware of them around 1970 while I was still in college.

For what it's worth, the glass in your lamp is #58 granite back bone beige opalescent, made by the Wissmach opalescent glass company in Paden City, W. Virginia, which has been in business well over 100 years and made some of the glass that L.C. Tiffany used in his lamps. The red glass is Wissmach #18 granite back ruby red.

The glass was cut and one line of the panels was bent in a lear at the Gramercy Park facility.

This fixture was made in the early 1970’s. I worked there.