Brand new, manufactured June 2024, with guaranteed spectral resolution scintillation crystal NaI(Tl) 63*63 mm (2.5"*2.5"), hermetically sealed with reflector and optical window. Resolution checked using Photonis XP5312 3" photomultiplier tube and GS-MAX8000 gamma spectrometer hardware. 

Want to build a gamma spectrometer? It's your chance.

Check out my other lots, I hope you will find something interesting!

Fell free to ask questions.