Modern Vespa

I just picked up a 1980 P200E. I was going to get insurance and a tag at the DMV. They need a 17 digit number but my body serial number is 20 digits long! What numbers do I need to provide?

Below it what I can see of the numbers:

DGM16773CM
VSX1T
*399XXX*

Thanks in advance!

this is your vin # VSX1T *399XXX* .

The DGM16773CM as nothing to do with your vin #.

17 digit VIN did not start until 1981.

VSX1T XXXXXX should be fine. Find an older DMV employee and show them the previous registration.

A 1981 17 digit VIN would be ZAPVSXLXX1X399XXX...

The DMV is wrong. VINs weren't standardized to 17 digits until 1981.
Up to 1980 manufacturers could use any system or number of digits. I believe most were using 13 digits just before 1981.

The DMV office should have a government published VIN manual that shows what every manufacturer's VIN should look like going back decades. We had several copies at the P.D.

Over in Oregon, our DMV doesn't have VIN manuals that show what every Italian VIN number should look like. I have no idea about any other of the 50 states though.

Whenever i bring some obscure Italian scooter to the DMV or State Patrol to to a VIN check, i bring at least 3 articles of documentation that shows what year/make/model/VIN location/how many digits are in said VIN # (I usually try to bring enough that i overwhelm them). Some places that i get that documentation is Scootering Magazine, scooterhelpcom, the Scooterworks catalog, the old SIP catalog, Scooters Originali website, ect...
Never once has the DMV or OSP been able to find an Allstate, T5, PK, Lammy, Serveta in their system. I usually let them search though their VIN books for about 5 minutes, then i will politely offer them my own documentation. It has worked 100% of the time for me.