I think what Sorsh was trying too say is the entire countries issues.That
means 1,2,3,4,5,6,7,8,9,10,11,12,13,14....and so on.
no, no, just a curious discussion we had.
for instance, every 4RBS from denmark is unique and because of preserved sheets, copies of them, and reconstructions based on watermark, blocks and strips a positive rekonstruction could be made.
same goes for every stamp issued from then and upwards, as printing techniques improved, there became less variations.
danish bicolored is divided into maingroups 1-5, each maingroup will have some matrice flaws, and because the oval is printed afterwards, the ovals also have matrice flaws.
because we know the perforation machines used, we can identify vertical perforation rows and narrow down to 10 possible postions, then matriceflaws along with frameflaws and ovalflaws you can pretty much place every stamp in a print and a position.
but icelandic ovals, is for the most part single color and made from blocks of 25 - same perforation machines so you can identify rows, but since they are identical you can "only" narrow them down to 2 possible positions (unless they are from horizontal top or bottom row)... and that's annoying.
swedish stamps are even worse, since they apparently are made from blocks of 10, so 10 identical stamps in each sheet (ringtype), and perforation machines aren't known to be a tool?
for those countries that people have listed here... is it possible to correctly position every single stamp?.