Correct Crystal for 6263

[dkjawj]

Hello all

Does anyone know what crystal is correct for a 1975 6263 Sigma. Mine is currently sporting a service crystal and I would like to replace it but not sure if I need a Tropic 21 Dome or Superdome. My watches year of manufacture is 1975.

Anyone know for certain if its a Dome or a Superdome ?

[swish77]

Originally Posted by dkjawj

Hello all

Does anyone know what crystal is correct for a 1975 6263 Sigma. Mine is currently sporting a service crystal and I would like to replace it but not sure if I need a Tropic 21 Dome or Superdome. My watches year of manufacture is 1975.

Anyone know for certain if its a Dome or a Superdome ?

It should be a Tropic 21, which is a domed crystal. I've never heard of a superdome style on a 6263. The 21s are tough to find, and then you have all the usual problems with old plastic crystals and genuine vs. aftermarket. If you already have a service crystal, with its sharp edges, you'll notice a big difference.

Here's an original Tropic 21 on my 6263 (6.0 million serial).

[dkjawj]

Good info and nice shot :-)

Thanks

D