We have an Advertisement Post Card Massachusetts Co-operative bank league Vintage item. It measures about 5 1/2" x 3 1/4". It was put out by Massachusetts Co-Operative Bank League. It reads "Your request for information about co-operative banking has been referred to the Co-operative Bank, your local institution, which will gladly answer your inquiries. Massachusetts C-Operative Bank League.". There is a preprinted 1 cent stamp on the front. These (on initial posting I have a few) have not been sent/addressed, they are nos.