1913 China Clay 2 Cent George? & 2 Other Weird Lookers

I hope you guys tell me something great here wityh these 3 babys! Puttin in the hrs here and need a great find so I can call it a night...havnt slept in almost 2 days stright through stampin! Seeing stamps in sleep soon..can someone please tell me whats going on with these 3 gang??The 1st is a Gray or Black and I couldnt find to save my tail in scotts...2nd is a 4 which I cant recall I have seen,and maybe airforce base cancell?? And the last,please tell me that last baby is one of those lost 596's ! Sure has a color to it thats for sure!
As always guys thank you!

1st one is Probably a Scott #405, just a bit faded is all. the 2nd is what is known as a duplex cancel, very common and the 3rd is most likely a Yellow / Green Scott's 632. You're looking for a Ruby in a Mountain of Rocks, keep hunting :)

China clay papers were 1908 - 1909. Scott 330's labeled as bluish paper and Some philatelists believe that China clay stamps are a myth, as examination of some purported examples failed to find any clay in the composition of the paper.

Suggestion:
remember when you're a kid,
Mom would say "chew your food, don't bolt it!"
You have to savour the experience.

Be aware there is a phenomenon called "stamp burn out"
Sleep is important.

First stamp is Scott 525 offset and the date stamp is 1919 witha crooked slug. The Milwaukee 3 left cancel was only used 1919-20. The cancel is from Universal model DT3-300.

I cannot see the crooked slug Russ,
care to elaborate please.

The last numeral in the year is "9" but it is cocked a little so that it cuts part of it off to look like a 3. Also notice the heavy inking on the right side and top right of the numeral where the right side was striking harder.

Edit
Date and time slugs

Gotcha. I was looking for alignment.

Scott specialized de-listed the China Clay stamps. I feel for all those who owned the purported China Clay paper stamps. THey were a little pricey.

Does any one have any updates on the status of the China clay stamps.

The bluish paper stamps are not the same as the stamps which were formerly listed as the China Clays.

For some reason I was thinking the "Bluish Papers" were the 330 series. They are Scott's 357-366.

Thank you so much for the wealth of information everyone! Things I did not see and know to look for from now on!Great stuff and thanks so much again!