Equatorial Mount Adapter for Vixen SPDX

This is a very niche item, but it's an adapter for the Vixen Super Polaris DX.

It converts between the 2-inch steel tripod CGEM (Celestron) and the adapter.

The overall diameter is just under 130mm, with a central hole of Φ25mm.
One side protrudes 90mm, and the other side protrudes 60mm.
The holes on the outer edge are likely used for fine adjustment of the polar alignment mechanism with the included pins.
(I haven't actually seen an SPDX myself...)

A washer is stuck inside, but it seems to come off easily with a little nudge.
There are minor scratches, but it is in good working condition.

Unfortunately, I do not know if it is compatible with currently available 2-inch tripods from Chinese manufacturers (such as Sky-Watcher). I can answer questions if you provide measurements, so please ask in advance if you have any questions. Thank you.