Paolo Antonio ??

[Keelbolt]

Could anyone give me any information on this Paolo Antonio accordion please?

 

[Scuromondo]

Never heard of it. My guess would be that a fellow named “Paolo Antonio” liked to remove brand names from his accordion(s), and instead decorate them with his name.

 

[Ventura]

during that time Ranco-Antonio was huge in Europe
and this little generic grey mouse may have been
the marketing equivalent of the more modern E. Soprani

 

[Squeezebox Of Delights]

My first European-built box was a Paolo Antonio, nearly identical to yours except a bit smaller! Paolo Antonio was one of the squillions of Italian-sounding names slapped onto mediocre Saxony-built accordions from the 1920s to the 1950s. A dealer in, for example, the UK would contact a factory in Germany and place an order for a number of accordions of an existing style, and would specify the name that was stamped on the front. Each dealer had a different name that they would use on their imported instruments, so it's common to see otherwise indistinguishable boxes labelled Paolo Antonio, Midella, Mazzini, Pietro, etc., as well as identical instruments with their real names - Hess, Rauner, and so on. I don't know who sold boxes under the Paolo Antonio name, but it might be possible to find out if you dig around on the internet a bit.
Essentially, your box is nothing special, at least in terms of rarity and monetary value. However, if it's playable enough for you to enjoy squeezing a tune out of it, then it's pretty much priceless!