Interesting story, please forgive me but I don’t understand how it pertains to my find? 

These two officer cap badges are currently listed on eBay by the same seller. My knowledge on left facing cap badges is fairly limited to what I've read on the forum. The first is the mid-size badge with dimensions listed a 2" tall by 2 1/4 " and the is unmarked. The second is a full size left facing BB&B marked badge. 

It might be worth more to a US-based collector who wants an original, unadulterated CF-issued M1.

One reason I’ve spent so much time researching Lt. Lloyd J. Andrews Jr. is that I think stories like his deserve to be remembered.   What strikes me about Andrews isn’t that he was a famous ace or a household name. He wasn’t.   What makes the story compelling is that he was one of thousands of young pilots who did dangerous work, flew dozens of missions, and never came home. Most people have never heard of him, despite the fact that he flew 73 combat missions, earned the Distinguished Flying Cross, served with the 367th Fighter Group—the famed “Dynamite Gang”—and was killed in a documented fighter engagement over Germany on October 20, 1944.   Before researching this archive, I knew little about Andrews. What I discovered was a remarkable amount of surviving history: photographs, military records, a full MACR, German crash and burial reports, family correspondence, War Department communications, and references in the published history of the 367th Fighter Group.   Most WWII pilots who never returned are known today only by a name engraved on a memorial or listed on a casualty roster. Researching Andrews has reminded me that behind every one of those names was a real person with a family, friends, hopes for the future, and a story worth preserving.   And please don’t misconstrue my efforts to tell the story of a largely forgotten combat pilot as a sales pitch. Long before I knew anything about Lt. Andrews, he had already flown his missions, earned his decorations, and made the ultimate sacrifice. My interest is in understanding and preserving the history of a young man whose service deserves to be remembered.   Whether or not any new information about Andrews turns up, I’m glad that his service with the 367th Fighter Group—the “Dynamite Gang”—is being discussed again more than eighty years later.

This patch is currently listed on eBay. Thoughts on if it is really World War 2?    

That particular helmet was issued to the Canadian Forces. BDF = Base Defense Force. The names and partial service numbers are CF. It is typical to find early shells mixed with later liners and parts in Canadian service. That set would sell for about 150 to 200 Cdn dollars in my neck of the woods.

Very nice. I moved to the Gettysburg area a few years ago and driving through the battlefield almost daily still gives me a bit of a thrill.

Um, on a mannequin? Where does any collector display an 80yr old harness? These are not for operational use. Titan, the lack of a canopy is a bit of an issue but not because a canopy is typically displayed. I have one setup that is deployed and I have never repacked it. I displayed it open as a backdrop for a larger display once and, what a pain. I will never do that again. They are far more easy to handle and look at without the canopy everywhere even if that makes them "incomplete". I have my later harness, like your yellow-marked one, on a mannequin right now. I have a packed seat chute also on a mannequin right now.   Together these are worth multiples of the previous evaluation IMO. Some understand what they are, their variations, etc. and some simply do not. You may PM me for more info but there are members who collect, restore, and replicate these items. They will usually comment but it sometimes takes a while. Hang in there. Dave

One aspect of Lt. Lloyd J. Andrews Jr.‘s service that I hadn’t fully appreciated until recently is that he was a member of the 367th Fighter Group, better known as “The Dynamite Gang.”   The nickname wasn’t a postwar invention. The 367th earned its reputation through low-level attacks on bridges, rail yards, trains, armor, and transportation targets throughout the European campaign. It became one of the Ninth Air Force’s most aggressive fighter-bomber groups.   While reviewing Richard Groh’s history of the group, I was surprised to find Andrews not only listed in squadron rosters, but also identified in photographs and discussed in the narrative covering the group’s combat operations in late 1944.   For collectors and historians of the Ninth Air Force, how significant is the 367th Fighter Group viewed today compared to other P-38 units operating in Europe? Has anyone here researched the group’s reputation among veterans or attended any reunions where the history of “The Dynamite Gang” was discussed?