Postcard of "Calisthenic Exercises."  Published by HH Stratton from 1908-1915.  The stamp box on the postcard says Stratton.  An excerpt from Metropostcard's write up of the company:  H.H. Stratton (1908-1915) mentions that some of their black & white postcards (lithos) had false real photo backs... which is the case of this postcard. Thank you for looking.