La Tene shield materials?

[Crispianus]

I think the Clonoura Shield in the Irish National Museum was made from alderwood and calfhide (?)

https://s-media-cache-ak0.pinimg.com/236...c6860f.jpg

Yes I've read that as well though I'm not sure how reliable it is, the size of the shield means you can easily use goat skins to cover it and it may not be possible to tell what type of skin was used after such a long length of time, could be Horse or Deer as well as marine mammel... most likely best guess.
The Celtic Yorkshire shields were Skin covered though again type would likely be unknown... it is currently thought that Vegetable tanning was unknown amongst the Northern Europeans at this time most finds of leather are from bogs or similar deposits and therefore subject to secondary tanning which would produce vegetable tanned leather even if it wasn't originally....

The second problem is the date the only way to tell would likely be C14, Hjortspring is dated to the 4th Century bc using this method, but essentially Clonoura could be much, much later though it would still be usefull for construction techniques I would think...

The third is the grip size, only about 8cm maximum makes we wonder if combined with the overall size it was intended for a boy... certainly I couldn't hold it my grip being 10cm...