Thanks Peter and Max for your comments
You've both given me lots to think about. :idea:
The top domed section wouldn't fit in the bottom section as a receptacle for the ink, because it is about three quarters of an inch longer.
Using a pumice stone to level off parchment might help date it. I'm more than sure that the two pea size balls are in fact pumice stones. They are a light grey colour and have what looks like tiny gritty specks.
I'll do some more googling :shock:
Give me a flamin' Biro any day :roll:
Anne E.B. :wink: