1904, Overprints on telegraph stamps, unused and used collection on 44 exhibition pages including Bradbury Wilkinson prints without denomination (including multiples), constant varieties, 1 centavo horizontally imperforated (3 blocks of 4), 3 centavos with double overprint, misplaced overprints, block with and without overprint, 12 centavos with overprint inverted and 13 values of the error 3 on 5 centavos including misplaced overprints; a very interesting specialized collection of this issue
