Greetings from New Hampshire, USA .
It was advertised as a 1959 Allstate Vespa 125. The back story was that the owner parked it in his shed about 25 - 30 years ago with the intent to restore it one day. Body is solid, gas tank has no rust and compression seemed good when I kicked it over.
Started reading this forum and reviewing other sites and the serial numbers and engine stamp tell a different story.
It is definitely an Allstate, but model number 788.94331 makes it a 1964 Allstate.
The engine number is VNB5M 049182 and that is a 1965 vespa engine number.
Frame number VNB5M 05832 is located on a tag in the front of bike under the handlebars, but I cannot find that number.
My best guess is the engine was replaced at some point in the past???