N-TBD: United States (USA)

3 1/2" X 4 1/8" (89mm X 105mm)

 

No markings

 

Picture courtesy Darryl Wagner

3 5/8" X 4" (92mm X 102mm)

 

No markings

 

Picture courtesy Scott Sorem

This is a composition similar in shape to glass CD 154.


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