What is this? how old is it? Possibly a rim?

[bartshop62]

Found this metal detecting in a ww2 military base. What is this. How old is this.
View attachment 1913474 View attachment 1913476 View attachment 1913477

 

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[HuntinDog]

Bart your pictures aren't working

 

[ArfieBoy]

I can't get them to open either.