Rostov Tumblers, looking for info

[thumpersalley]

Ok, here we go again.
I received 3 Rostov Tumblers. I have looked at the standard, doesnt help me. I have one that is brown & white that zitters his neck, one that is yellow & white & one that is yellow & white with a shell crest. I would be interested in talking to anyone on this group that has these that I can send pics to. Im interested in knowing what the quality of these is. Ive found very few pics & the only website I can find is the same one I use for my Kazans, it gives some pics, a mild description of what they are & what the old standard was at one time. Thanks! Kim