Early 70's
The door handle is chrome and the lint compartment has a hindged lid. This was just before Inglis/WP dryers went to the plastic body-coloured door handle and 1-piece lint screen. The position of the lint trap means it's a single-belt-drive model (with the long lint screen), which was the newer design of that time.
I didn't know they had RCA-branded WPs here in Canada, since the RCA laundry appliances up here were usually made by Westinghouse.
Gary