Loetz Rubin Matt Iris, PN II-20, ca. 1900 - Unknown DEK

This is a really unusual Loetz DEK that I have never seen before, although the colors used are exactly the same as DEK I/59 (see third photo). Ruby red ground, matt iridescence, with polychrome enamels in shades of green, yellow and red. The rim is crimped in four places, and it has a perfectly ground and polished pontil. Unfortunately, no marks at all. A little over 8.5" tall.