Show here your Sarmatian warrior impression

[Dain II.]

As you have both noted-- the tradition and STYLE of construction runs straight, and we can see that it can be traced back to the bronze age.

I didn't. I can not see a tradition of this armourpiece before the 7th century in Europe or western Asia. Also the style of construction is different. Why to the bronze age?

I have seen an EARLY and nearly exact example fashioned from bone in a Russian article, I believe from the Altai or Tuva.

How early? Without an cultural context I would doubt it is usefull to span the gap. The first thing that came in mind when I read your post was armour from the Tschuktschen in the outest northeastern part of the Russian Federation and are conected to the arctic cultures.
In the following article from Kajiwara Hiroshi you can see at plate 3. an Tschuktschen-bonearmour with one greave: http://www.academia.edu/458822/On_lamell..._viewpoint

As far as I remember John stated the splintgreaves, he was wearing on a photo, which I am still unable to find, together with an Antinoopolis-ridingcoat while jump with his horse, as only theoretical and labeld them as possibly hunnic. I will get me this osprey issue so I can see this depiction you mentioned.

kind regards