We have an  Advertisement Post Card Antique item.  It measures about 5 1/2" x 3 1/4".    It was put out by Consolidated Fastener Company Boston Ma.  It reads in part "Dear Sir:  We are in receipt of your favor of the .........inst., and contents will receive our prompt and careful attention.  Very Truly, Consolidated Fastener co."   The list of items the company sold are on the left in red.  There is a preprinted 1 cent stamp on the front.  They are from the early 1900's as the preprinted place for the date is 190... These (on initial posting I have a few) have not been sent/addressed, they are nos.

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