Maker is Pinni & Ortelli Buckingham ( I think hard to read the italic lettering)
I am not a horologist but I can tell you the following
I think the balance is ok, If I gently move the verge with a pin it ticks
I think the fusee chain is complete but I am not 100 % , I can see what I think is the end of it and my synopsis is the chain has become detached on one end. if you wind it the watch just keeps winding.
I can make no guarantees on if my synopsis is correct ! I have limited knowledge.
Check video
5.41cm diameter
143 grams
Postage to Italy or Spain must be through Ebay Global Shipping.