Crystals are new taken off from new spectrometers. designed to measure Beta.
New, old stock, may have some scratches at body, please take a look at photos.
Actual size 50x40mm with body
Crystal size 30x30mm or close to this measurement. Will be packed well and shipped by air mail - with tracking number.
Happy bidding.
If you need some more photos or have any questions - please send me a message.