The PASS-CO standards for the grading of historical autographs and manuscripts, stocks and bonds and photography have been developed by long time industry professionals with decades of experience in handling these collectibles. PASS-CO has taken into consideration the standards that have historically been accepted by collectors and dealers alike. Through a collaborative process which has included collectors and dealers, we have spelled out a coherent and easily understood series of grading standards. In keeping with the manuscript industry standard, we have chosen to closely follow grading standards which have be laid out by the prestigious Manuscript Society. As a result, we believe PASS-CO has developed and enunciated standards which should be comfortable to collectors and dealers alike based upon real world marketplace conditions.