Do you guys recommend any books or guides i can peek at for authenticating patches?

28 year old Private Milford Nichols of Ohio was in the 1st Division 16th Infantry Co D. He was gassed October 9th 1918 in the Meuse Argonne campaign. My wife's Grandfather. It didn't kill him. I don't know where this was taken or the date. 

What brand liner is that? At first glance I thought Euro liner??? Saint Clair? Hood Rubber? Im not understanding the liner chin strap  on the helmet with the liner in it, vs the one you show on the liner  in the stand alone shot. Two different liner chin straps? Two different liners or what? ?  

That is absolutely FANTASTIC!  I have seen and have owned several of the WWII Training Aids over the years, but nothing like this.  Great score!   OD  

Thats pretty cool. Have a wood sign for one of the theaters at Camp McCoy. Was tokd there were several and they were mainly auditoriums.

I was inclined to clean the aftermarket coating off… ok idea? 

Yeah, I know its awesome. If it was abkut half the size it would be better for display but not as much of an instructional aid.

Oh man that is freaking cool!   The thing about this is, it's huge and most people can't display it.   But there are individuals like me who are single and no woman to answer too, therefore I put this stuff up in my house on display!  lol   I would love to put this on my wall.  :)

There isn't any difference between a M40 Buttplate and a commercial one from the 60's.   They are the same.      The biggest thing on these buttplates, for guys who clone the M40.  Remington put them on a stock, and sanded the stock and buttplate together.  So all of these are a little different in width depending on how much Remington sanded.      A lot of these are sanded really thin and then they are really hard to fit to the repo stocks.   So most want measurements on them.      Usually, I see these sell for $40 to $50 to cloners. 

Greetings all. This was purchased as a Vietnam Helmet. But I dont think it was.  Its a WW2 McCord original OD straps. Does not look like it was a converted fixed bail. with a WW2 Seaman Liner. It has a 60's headband in it.. And a mitchell cover dated 1970 and a helmet band proper for that era. The steel has a stamped laundry number which may be the WW2 wearer? Those stamps always make me think it was a USMC used lid.. Then there are later US and RA numbers and names and the liner sticker is for the 29th artillery which was authorized that DUI in 1953. The C33 ? A Rack number?  But that cover and headband and helmet band I believe were added by a seller? Collector? Because it has rust on it. This helmet and liner has not a speck of rust.. So Ive removed those items.. And the Peace signs came off with acetone very easy and quick. Leaving me with a nice WW2 lid that saw usage at least into the 50's maybe the Korean War. Also, the liner has taken on the shape of the steel. Fits snug like its been in this steel for many years.   Cheers!