In 1950, Tappan introduced the Deluxe Model AV 669. This model was "CP", so it had a standing pilot light in the oven. In reading the ad, we learn that this was the first model that contained the Crisp-Chest in the left hand storage area.....a nice clue when trying to figure out the date of your stove. This model also has the medallion insert on a chrome oven/broiler handle. It also appears to have a chrome interior oven.
Thanks to blog reader Joe M for providing the ad....and tips on model year.