In a B.O.B. Lot I picked up, this strip of 3 is labeled as #O4i (narrow spacing). What does this mean? The stamps don't appear any different from a regular #O4. Is it accurately catalogued? Thank you for your input.
For Canadian line-perforated stamps, there were three main perforator types that were mostly used: 1) Sheet-fed rotary wheel perforator (sheet, booklet and coil stamps with mostly unaligned perforations). 2) Web-fed rotary bar perforator (coil stamps with aligned perforations). 3) Web-fed rotary wheel and bar perforator (sheet and booklet stamps with mostly unaligned vertical perforations and aligned horizontal perforations).
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Posted 05/06/2023 12:09 am
