Hi John
I made an assumption (maybe incorrectly) that Italian 'House of Goebel' meant someone in Murano.
I suppose I should come clean, and say I was the seller! I bought cheaply, it suspecting it might be French, then decided I had no idea who made it. It was too light to be a classic French factory product from the 1850s - but that leaves a lot of possibilities. If someone gave me convincing evidence that it was French, Scottish, or Italian I would believe them. A strange little weight!
I am happy to accept Andy Dohan's ID.
Alan