Hello, my name is Justin I am new to this forum. I bought a 1979 Yamaha DT175 about a year ago in 2017, and I noticed next to the vin number there is a little green and silver tag that says property of USDA forest service with it´s own separate little vin number. I was wondering how rare this is and if it adds to the value of the bike and I would also just like to share it with you guys in case certain people have never seen it before, I thought it was pretty cool. Thanks!