My collection of Denmark Definitives begins with the Bi-Color Numeral Issues from 1870 through 1904.
These stamps come in a number of challenging varieties, especially the “Inverted Frame” variety that exists on most of the stamps. This variety is poorly illustrated in all 3 of my catalogs (Scott, Michel and Facit)
The stamps come in 3 perforation varieties. 14×13.5, 12.5, and 13. The 12.5 perforation is only available on the Skilling values 2s, 4s, and 48s.
There are 2 watermark types. Scott lists them as Watermark 112 and 113. They are very similar and sometimes difficult to tell the difference.
Looking at the second watermark image (Wmk 113) Note how sides of the crown extend upwards at much more of an angle than on Wmk 112. Also, on Wmk113 the bottom of the crown is less squished into an Oval than Wmk 112.
There are 2 frame types. The “Normal Frame” and the “Inverted Frame”. This was the most challenging as the Scott, Michel and Facit catalogs all have poor illustrations and descriptions of this variety. Fortunately I found a website that described the variety in more detail ( jaysmith.com )
There are a couple of ways to tell the difference, but the easiest in my opinion is to examine the angle of the 2 buds on the branch above the “A” in “Danmark”. On the normal frame, see how the red line extends at an upwards angle, and on the “Inverted Frame” the line extends downward. In other words, on the Inverted Frame, the first “Bud” is higher than the second one.
Most of the issues exist in a variety of colors and shades. Some of these color varieties are given minor number status by all 3 catalogs.
Note both the color differences in the Blue as well as the background. Background is more greenish slate in some than others.
Background and foreground color differences.
Note the brighter blue in the first stamp.
My collection only contains a few examples of the 4o, 8o, and 16o in various varieties, but many of them are in rough shape. I kept them in order to note the color differences among them.