I saw two older DB Suburbans for sale at recent small engine swap meets and at a tractor show/pull ,both were priced at 400-450 dollar range..same blue color as this one pictured here..very nice condition,with AG tires..but no generator!..
Yours is very nice,and the generator IS a rare option for sure!..
I also saw a sickle bar mower at another meet,the seller claimed fit the DB Suburbans,but since I dont know if they even had such an option or what they would look like,I had to take his word for it..I'd love to find one for my later 60's Suburbans,even though I'd probably not have that much use for it..