I own a black SL2-MOT that was built from a shelf queen and a parts camera.
Basically I sent two cameras to Sherry to build me one camera. I secured both cameras from Adorama separately: one evidently the CDS cell had failed early on in its life and was the reason why it went unused for many a decade; the prism was funky also; then I found a hammered SL2 donor that was dented with a pristine prism and working meter.
A SL2-MOT is kinda rare with only about 1000 ever made. One peculiar thing though is there is no way to turn off the meter, and I asked Sherry to try and add the switch from the standard SL2, but Sherry replied that it was really hard to do and that SL2’s are crazy ly overbuilt and a pain to work on.
BTW the donor camera was so hammered and worn that the lens mount needed replacement. It looked like it was used as a weapon in many a street fight. Kinda funny how the meter was robust and the prism was perfect. Pretty much a lucky find.
Her solution was just use a lens cap: this deactivates the CDS cell and turns off the meter. Mucho simple fix.
BTW Sherry updated the power supply by changing a resistor so that I could use modern batteries.
Cal