Recently ran across blue jars at my great granny's farm house..Most are quarts Ball Perfect Mason,but have different markings on bottom..Some have 0,10 with line under,15,8,3 with line under,& 9 with line under..Some are Mason's Patent Nov.30 1858..A couple seem to have a five dot pattern on bottom,while others have a single dot..One has 13 on bottom,and the other has 822..If anyone knows what these are worth,it would be a great help..Also have some that just have Ball Mason on them with 2H &T4 on bottom..Found a gallon jar with no writing & 0 on bottom..This information may already be on this site..If so maybe someone could show me,as I'm new to this forum..Thanks and God Bless.