Here is a very nice example of a poster, issued by the United States Postal Service in 1979, to promote postage stamps honoring Pennsylvania Toleware.  The 41-year old poster is in very nice condition but does have thumbtack holes in the corners, suggesting that it was displayed in a Post Office.  It measures approximately 24 x 36 inches and retains a vibrant color.  Printed in the corner, it says "Poster 410  Post April 12  Remove May  1979 U. S. Postal Service".  I will be glad to answer any questions you may have or arrange for combined shipping should you win multiple auctions.  Thank you.