This is the PSS L-3 from Cincinnati catalogs 0.20 - rather common. There is a new pre-1907 refence book available from the PSS. Oddly, these postage dues are not included as they are now considered 1911-series dues. Altho some of these are unwatermarked from 1895 - the vast majority are from the later single line watermarked paper.
Here is my collection - I am only lacking the two cent double precancel...
