Yes…that’s definitely a classic Princess canister that uses Style H bags…for sure.
Getting white Eureka attachments should be pretty easy. For the basic set of white tools, look for a set of unused Eureka upright attachments - I think the set is called Model 60 (A or B or C or any letter after the 60). With those sets you’ll get a brand new white dusting brush, upholstery nozzle, crevice tool and even one plastic wand and a plastic hose handle that would even fit on your hose.
Getting a bare floor brush and carpet nozzle may be a little more difficult, but they are out there. Some old vacuum shop may still have them New in Box from Eureka.