How to determine a real paint job 70 years later??

[Danmark]

OK guys, what about this relic, eh? ....... what a garish shade of green - BUT surely it's legit because it's a dug relic .....Whaaaat?

So it got me thinking on weird cammo patterns ( or alternative colour paintwork.) How could we tell ( using this possible example ) whether the paint was wartime done or if a kid in the 1950's painted a helmet and then it got dumped, buried and dug up decades later ?? ...... I guess as implausible as it may be, we can't really tell - but sheez, this one is just kooky!!!

Dan

[MD Helmets]

Taste the paint. If it tastes 70 years old than its good

[DougB]

Not sure when they are in this condition. Experience is the best bet.