Checked out my bongo today and the date is 18th July 1995. SGL-3

I'm in the list poppy the bongo will be showing his first appearance at the fest ..new club member very excited ..

I have a bongo I have had it imported last year I have tried to type in the age of it as its a 95 model and the start is sgl3 and the last numbed are 129 how can I check age plz can someone show a example of how I need to import the numbers thanks