Update on the Sil plate...
Was getting it ready to ship and got it into better light - this sill is not perfect.
This is a long mark on it that does not clean off with IPA, and there is a small nick.
Personally I would only use it as a base to be covered in another material.
Cover the shipping if you want it - and it is yours
Most likely - just a item that goes in the plastics recycle bin