I've posted this M1 shell before but wanted to pass it by everyone again in case there might be a fresh set of eyes out there that might be able to identify this paint scheme. This is a WWII SB Schlueter relic shell I picked up and removed the re-issued OD paint to find this underneath. The blue is VERY Navy looking.
This is not the only example of this helmet floating around so it must have been purpose painted.
Russ & Son