I received a glass jar that is marked PYREX Reg.US. PAT OFF. on one side and MADE IN U.S.A. with the number 58 Below that on an adjoining side. There are 2 white rectagles each on the other 2 adjoining sides. It is aprox. 19" tall and 14 1/2" wide. Small chip in glass at top edge. Otherwise in great shape. It looks to be foggy inside evenely about 3/4 the way up from bottom. It is quite heavy. I was told by the person at the garage sale they thought it was a battery acid case. Does anyone know or know where I can try to get more information? Is there a way to determine the value of such an item?