I had to realize that, when size information is given at all, it is almost always incorrect for the Danish Christmas seals. The illustrations are often of very poor quality, and special formats such as booklets, reprints, and souvenir sheets are frequently missing altogether. Furthermore, in the more recent issues, there is no distinction made between gummed and self-adhesive seals, and so on and so forth.
In total, thousands of individual entries in the catalogue would need to be corrected or supplemented. Is there a simpler way to do this—such as a CSV table that could be imported—to make the process easier than editing or adding each value one by one?
By way of background: I have created a digital album for the Danish Christmas seals covering the years 1904 through (currently) 2010. As such, I have accurate measurements for all seals as well as a comprehensive set of self-created images. I would be happy to make this knowledge available to others via Colnect. However, manually editing each of the many, many individual entries would simply be too time-consuming for me.



