That's a late `69 ST70 VIN and looks to be a "Type 1 general export" model. The VIN tag, if it has one, along with any other remaining decals, might offer other clues...via the language...as to the market for which this bike was originally intended. Unfortunately, several such early examples I've run across have lacked VIN tags - near as I have been able to determine, they're the ST70 equivalent of the early "silver tag" CT70s.
Looks like Candy Sapphire blue, same as CT70 K0 and the most common color I've seen on early STs.
If you're lacking virtually every ST70-specific part, returning it to factory original is going to be very difficult. There's a good chance that this bike had the demountable front end and turn signals - a lot of unobtanium parts. Still, a good base for a phantom model, restomod or custom...and the ST70 VIN makes it a little different than a more common K0.