hi
I have this 3inch Losmandy type dovetail for sale.
good condition with minor scuff marks
-- Width: 100 mm
-- Length: 438 mm
specs are here
https://www.teleskop-express.de/shop...h--438-mm.html
"Suitable for:
-- Telescopes with 200 mm tube diametre and bigger (to be mounted without tube rings)
-- All tube rings with flat mount surface
-- Celestron C9 from 2008 and newer (bore scheme fits directly)
Fits e.g. to the following mounts:
-- All (Losmandy) mounts with 3" dovetail clamp
-- Celestron CGEM, CGE Pro"
$80 plus postage in AU
Alistair