I need a little help identifying these Russian ponies por favor. From left to right, base diameter first: 2-1/4 x 3-1/2; 2-1/4 x 3; 2-1/4 x 3; 2-3/8 x 3-1/8

Update: The one on the left is a CD 568.3. The one on the right is a CD 568.7.