This is the smaller of the two revenue collections I purchased at Chicagopex. Unlike the larger collection, this one is a a completely disorganized mess, with almost exclusively low-cat items, just gobs of them ripe for flyspecking and hunting for cancels and silk papers.
In addition to what is shown, there were also several packets of R135 and R151, as well as a couple of small revenue collections on album pages, nothing of major import (at first glance).
This one has a bit more variety, in that there are pages of battleships (both documentary and proprietary), cheap telegraphs, playing card stamps, and a few other types.
Once I go through it, I'll probably make up a new variety of donation packets. The quantity of different playing card precancels should hold some interest for folks.
Be forewarned, the page below contains 110 high-resolution images, so if you're on dial-up or mobile, you might not want to click it, as it will suck bandwidth...http://www.revenue-collector.com/chicagopexsmall/