Berlou Moth Tag Gold vs Grey

[Lindsey]

I am trying to date a lovely vintage coat however there are no manufacturer tags in the coat. The only clue I have is a gold Berlou moth tag.
I see that the company at one point seemed to have a grey/black tag and a gold tag. Were these two colors used during different decades?
thanks!

 

[Midge]

Can you please post full photos of your coat? That will probably help more with dating.