Extended Extra Portion Of Stamp? GB Scott #61 Plate 19.help Needed?

extended extra portion of stamp? GB Scott #61 plate 19.help needed?

note the left side of the british stamp from 1873.the perf is extended way to the left.does anybody know?

Known as a "wing margin". Occurred on panes of surface-printed stamps within the sheet.

To expand a little on Geoff's reply, they are relatively common from stamps around this period, both surface-orinted and recess-printed. They tend to be either right or left margins, and I haven't seen very many from top or bottom. I've only seen them on British and Empire stamps, but I am sure that they occur on stamps from other countries as well.

Very large margins are often described as "imperf to margin" but these have a margin at least the dimension of the printed stamp. Such stamps command a premium over catalogue, often significant, depending on which dealer is trying to sell them.

For many years "wing-margin" stamps were considered "not collectible" and full-margin stamps were favoured, but these days they are treated as equals.

Here are a couple of examples of "imperf to margin" stamps:

As Tim H already mentioned, if you find these they are often British and Emopire stamps. Other countries will also have them. Here is a example from my Dutch collection. Shown are a regular and a wider stamp both nvph number 7 II E. So same printtype and same perforation but very different in size.

You can finds lots of examples of wing margins here. Probably the most-recent thread is this one:

https://goscf.com/t/53267