Looking for N. Ventricosa 'Denver' cultivar!

[Jikkermanccini]

Hello all! I'm currently looking for the cultivar of N. ventricosa known as 'Denver', and have had absolute zero luck finding it! It's a form of alba-type pitcher with rigid bodies and red speckles, like the Wikipedia photo of the species, and is used in a lot of Carnivero's crosses. At the moment I'm trying to collect the entirety of section Insignes (ventricosa, sibuyanensis, belli, etc) as well as a few duplicates. If anyone has the Denver clone, or knows where to find it, please let me know! I'm willing to trade some of my other plants for it and related species in the Insignes clade.
Thank you for your time and God bless!