[NATA NOVA]

An interesting message was received from Eugene Krotov.
The report advised that the "fish bone" is called palatal bones of sea carp.
Quote from the report:

... "I do not think it had a tusk of a walrus because of (an article on a bone, walrus tusk, and similar animals known as sea fish tooth or bone), while at the same time, the palatine bone, Sparidae (sea bream) it is used for polishing - it turns silky shine, though, there is no specification that this is used in painting. as it is unlikely that Pokhitonov would handle the bone plates to the letter - there is absolutely no need to level the ground in front of the plane (I heard somewhere that he was primed dammarnoy resin (mastic) - that is, roughly speaking, did something like lacquer ground (and it gives the best connection to the paint layer to the substrate). than glued to the ground, I do not know. maybe you find what you are- else about it, it will be interesting to hear. "

So welcome to the news on technology polishing a fish bone.
Now this "Sparidae" find somewhere ... <! - ~ 1 ~ ->
Pictures of sea carp:
Posted 3 hours 2 minutes