That looks like a clone of a Vixen Polaris (NOT Super Polaris) Mount head.
ADM Telescope has a adaptor dove for it the Vixen Polaris to convert to V series saddle. See
https://www.admaccessories.com/produ...olaris-mounts/
I have the Vixen Polaris and the one in your picture is close but not identical. The ADM saddle may work or you rig something up yourself. You just need to secure a Losmandy V or D or DV saddle to mount to the two threaded holes in your existing saddle. I did this myself but the ADM product is a much nicer solution.
See also vixen polaris mount image at
https://www.cloudynights.com/topic/5...vixen-polaris/