Thanks for your responses, friends. I have got the Asahi Pentax. It was bought in 1969 "in order to see the man`s arrive on the Moon". It is in good general shape, but it is pretty dirty.

The main issue is oxide spots in the chrome parts in the focuser drawtube, finder scope and mount handles for micro adjust.

Any suggestion about that?

Optics needs some care too. No scratchs, just dirty.

OTA presents paint flaws. It needs repaint it. The OTA has a dent, and I don`t know how to correct it. I`m not very handy...

I would like to repair it and leave it as the Preston`s one!

But the scope came with three eyepieces of 0.965": 20mm, 12.5mm and 6mm. And a vintage Tasco Barlow 2x 0.965". Even the booklet 40 Y.O.! Also, the wooden case.

It has a weird "solar filter" and the diagonal is in very good condition.

I will post some pics soon.

Best regards.

Edwin.