Probably middle age silver coin

Please help me with this one. This silver coin is 17.0 mm / 0.9 mm, 1.1 g. One side has a cross with dots. Text on both sides is difficult to read.

In the left image, I think we can read RI(G?) at 7:00-9:00 and clearly REX at 12:00-2:00.  Possibly a crude bust with scepter to right?

Thank you for helping me. I actually find this coin from my hometown using metal detector. I have delivered the photo to the Finnish National Museum also.

Could find similar coins (weight, size and motive of cross with dots).

Portugal, 13th century, 1 queitil 

It will remain difficult.

Style may be also close to the denars from Emdem

Thank you. I'll check those next.