A larger photo of the badge would be helpful, but given the general shape of the cap, I believe it could well be of WWII vintage.
I've never seen that maker before, but it looks authentic.
it looks like a Essex badge.
The dates for this maker is unknown though they were still in business in 1953 and at some stage had by appointment to the Prince of Wales, but which one is not known.
Whatever its just an opinion.