Thank you Joachim, I found it where you suggested and It's the same as the engine number *002*1706*.
Please excuse my ignorance, I'm new to Gileras. I'm thinking that somewhere there is a website where I can enter my serial number and get the model number.
If not, here are some additional details.
Motor has Gilera on the right engine side cover
Carb is an ME18DS with correct looking air cleaner
Speedometer is in MPH and reads to 80MPH
rear sprocket has 54 teeth
wheels are 17 inch alloy
gas tank is the more rounded shape which seems to be common on 98 Gileras
Original color seems to be white with black
When I try and measure the engine stroke with a straw down the sparkplug hole I come up with 63mm.