Vintage Yellow Royal China Sierra Madre Ironstone Coffee Cups Set of 8

This set of eight coffee cups are vintage from the 1960s. They are a cheerful yellow -- which is very much in now -- and are of the Sierra Madre pattern from Royal China. The mugs measure approximately 3 inches tall, with an opening diameter of approximately 3 inches. Bottom rim-- the part that sits in a saucer -- measures approximately 1.75" in diameter. There are subtle manufacturing imperfections to some, such as slightly bumpy glaze and waviness. A handful of the cup interiors have tiny dots/specs (last photo), which are barely noticeable. Light staining to cup bottoms. The insides of the cups are not as bright white as shown. The exterior color is best shown in cover photo. No cracks, chips. Overall, they are in good - very good vintage condition. No saucers.