Royal model 20

[crestonguy]

Trying to find out how old this vacuum cleaner is. Says model 20 and 9808 ???
It's kinda ruff, but I cleaned the motor up and turned it on and it runs!!!
Any idea how old it is and is it worth anything? Thank you in advance for your
help. Can't find this info anywhere.

 

[hygiene903]

Never heard of a model 20. Would love to see a picture of it. Is it straight suction or revolving brush?
Jeff