Vintage Crosby & Overton Playing Cards

Card box and cards are marked Crosby & Overton Ship & Industrial Cleaning. Long Beach California with a phone number . I see no date but I believe these to be hold in the early 1960's or later because the first two parts of the phone number are letters an not number and if I remember right I think they changed that over the last 1960's. Box show wear cards are in good condition