My next project has arrived.
I have a half finished Porsche engine in progress, and that interrupted the making of a titanium watch case/enamel dial/blued hands, so this is in a queue.
However I did say I'd post a picture when it got here, so here it is:
They are investment case silicon bronze case blanks.
With luck, effort, and a following wind I'll get to them before Christmas. Then That'll be the presents sorted ;)