EMI 9635A Photomultiplier Tube! Known Good PMT Removed From Working Equipment!

Description

EMI 9635A Photomultiplier Tube! Known Good PMT Removed From Working Equipment!. Condition is "Used". Shipped with USPS Priority Mail.
Removed from a working electron microscope during decommissioning. Some very small black specs on lens (have not tried any cleaning process). Please see pictures! PMT was saved as “known good” so don’t believe they will affect performance.
Liquidating inventory from my father’s company and have many other components available, always happy to combine shipping with other items!