26.
Buyers Guide An Analysis of Selected U.S. Postage Stamps
by Datz, Stephen R.
ISBN: 9780882190310
List Price: $14.95
OUT OF STOCK
See Availability on Amazon27.
1992 Errors Inverts Imperforates Colors Omitted on U.S. Postage Stamps
by Datz, Stephen R.
ISBN: 9780882190211
List Price: $25.00
OUT OF STOCK
See Availability on Amazon28.
1992 Errors Inverts Imperforates Colors Omitted on U.S. Postage Stamps
by Datz, Stephen R.
ISBN: 9780882190273
List Price: $12.95
OUT OF STOCK
See Availability on Amazon29.
1984 Philatelic Index of United States Postage Stamps
by Datz, Stephen R.
ISBN: 9780894870521
List Price: $14.95
OUT OF STOCK
See Availability on Amazon30.
1994/95 Errors Inverts Umperforates Colors Omitted on United States Postage Stamps
by Datz, Stephen R.
ISBN: 9780882190280
List Price: $12.95
OUT OF STOCK
See Availability on Amazon31.
2003 Catalogue of Errors on U.S. Postage Stamps
by Datz, Stephen R.
ISBN: 9780873494762
List Price: $14.95
32.
2002 Catalogue of Errors on U.S. Postage Stamps
by Datz, Stephen R.
ISBN: 9780873493154
List Price: $14.95