I have Discovered Perpetual Motion

Front:
thoug PERPETUAL MOTION I HAVE DISCOVE RED AUG CAS wite White meo in Wees WOCDHAN A. H.-91 .. METER Seve antem

Back:
U.S.POSTAGE Post Gard OS At TR 193 ONE CENT THIS SIDE FOR THE ADDRESS P.O re Coleel maunaok ell