1923 Series

I've started sorting this series of stamps 1/2c to $1 starting at the bottom I have got to the 1c all purfed ( not done the 2 sides yet) and I seam to have 3 types of perforations verticly I gauged it off a 11x11 flat plate 1c same stamp some were quarter a perf out and some were half a purf out over the length of the stamp this is as far as I've got so far I have had a look in my book stanly gibbens but it doesn't give anything more than vague info and references on this set I am a noob but at times I think world domination would be easier than trying to understand this book at times. In the 11x11 pile there is coil and flat (I think lol) can someone tell me what to look out for as I have over a 1000 of this set to get through

Mike,

Hopefully this website will help you work your way through the pile without losing your sanity!

Steve

http://www.1847usa.com/1922identifier.htm

Thank you I was starting to think I was going mad and seeing things that weren't there on a series that seams to be easy so once I get past the 5c it's plain sailing lol
That's a good website to remember