VLX1T is a Vespa frame VIN code.
VLX1T is VIN frame number for 150cc Vespa models: P150x, PX150e, PX150e Arcobaleno, PX150e Arcobaleno Elestart, PX150 Classic, PX150 Disco made through years 1978 - 1999.
VLX1T vespa models
P150x (1978 - 1981)
(6 volt points ignition, clutch-primary ration: 22/67) The speedometer on these models were round and had the turn indicator and highbeam light above them. There was no fuel gauge and 2t oil was pre-mixed. Some early P150X's have a square headlight (similar to that found on the Indonesian Excluisv).. With a frame prefix of VLX, we can at last confirm that these square headlamped P150Xs are indeed Italian made (these were however intended solely for the asian market.).
P150x detailed info and spec