Interesting piece Partime !
First the terminology.
Quote:
Also, the stamps that England issues with a huge 'half moon' perforation are also called syncopated!
Let us not forget that terminology differs from one place to the other.
In the UK, the Syncopated perfs are termed 'Ellipses' , so you will see the term 'Elliptical perforation' not syncopated.
There are occasionally missing pinhole varieties, in this case 1˝ !
There would most likely be a small mark-up on value too.
As for the pin itself, I have no idea how they are put together but will do a bit of research. It's all good fun !

Also, I have just seen this thread is over a year old ! I wonder how I missed it

Londonbus1