USSR porcelain from the early 1900s very rare

i have 3- 8" inch X 5" inch and 10 4"inch x 2.5" inch for what it appears to be porcelain from the USSR from i think 1937.it has a mark on the bottom USSR    MM    1937.i have done some reasearch on them and i cant really find to many of them anywhere.it has a gold ring on the top of each bowl and throughout the designs.they have almost a chinese look to them but they are from the USSR.they are in great shape no chips or dings in them.i will accept offers for them.i looked on ebay and one piece of this set and it is alot smaller is going for 2400.00$.that is the only piece i have found all over the internet.the bigger bowls weigh 2 pounds and the smaller bowls weigh3/4 of a pound.it is really nice stuff.the stamp on the bottom of them are very clear i just couldnt get the camera to focas that well on them.if anyone wants more pictures of anything just let me know