For your consideration, here is a California World's Fair on San Francisco Bay  Postcard Strip, set of 9 postcards, no. D-5928, made by the Stanley A. Plitz Co.  Nice graphics and very colorful.  It has be used and the postmark was in 1949.  It has some wear on the cover.  There are creases on the sides of the covers also.  It will be mailed in a bubble mailer, with foam core stiffeners.  Item pictured is the actual item for up for sale and comes from a non-smoking household.  (363.58q-.4od)