USSR 1 Рубль/ Rouble Edge Varieties

I have found just now, that 1 rouble 1979 has the edge readable from reverse up and between ОДИН РУБЛЬ and 1979 are small stars, the 1 rouble 1981 has edge readable from obverse up, small stars. But the 1983 has bigger stars that they are on 1981 rouble.

Can anybody else also confirm this information for later/sooner issues of 1 rouble coin ?

noone knows anything about it ?