Your Deutscher mower is a late Sixties or early Seventies model. The indicator here is the solid tyres on the front wheels. It is possible to upgrade to pneumatic tyres 3.50.x 6 on these wheels or to larger alloy wheels as on later models.
I don't know whether you are on my mailing list, if you are not I can send you quite a bit of general info on Deutscher. There is no charge but I will need your email address.
Terry Scanlon, Tahmoor NSW 02 4683 1140