Here is a Fighter helmet brought back by a USAF vet from Vietnam. It is original period custom paint.
I did not find any USAF unit's using the Tiger. But there was a South Vietnamese Squadron that did. They flew VNAF A-1 Skyraiders loaded with huge payloads of bombs and missles.
I found a photo of their aircraft with a similiar Tiger painted on the fuselage. I believe this helmet is from that Unit Guaranteed original, see my Feedback.
Vietnamese VNAF Flying Tigers A-1 Skyraider (Spad) at Chu Lai, Viet Nam; Summer 1965.. You will see this Warplane with the Flying Tiger. I have this posted in a Collector's forum and here is a comment about it.
This is a P-4 helmet (introduced in mid 1950s) which was pretty obsolete by the Vietnam War, but makes sense for VNAF who I've seen photos using this model. The item "Rare South Vietnam Fighter Pilot Painted Helmet Flying Tigers A1 Skyraiders" is in sale since Friday, December 17, 2021. This item is in the category "Collectibles\Militaria\Vietnam (1961-75)\Original Period Items\Hats & Helmets".
The seller is "historynut" and is located in Safety Harbor, Florida. This item can be shipped to United States.