This market is on a definite downward spiral. While overall R.P.O.'s sell well, the lack of collectors collecting R.P.O. covers for the sake of R.P.O. covers, there is a real possibility that when the current generation of researchers go to their reward, there will be no one to continue their work. The trends noted last year are still in force. More geographic collectors are including R.P.O. covers in their collection than ever before. There are fewer collectors who collect R.P.O.'s in their own right.
Demand is satisfactory, but for the wrong reasons.
There is a very good demand for R.P.O. covers, just not from R.P.O. collectors. R.P.O. covers sell to town cancel collectors who collects them as part of the postal history of their particular area. The market for streetcars is now almost totally moribund.