Looking for some information on this coin

I’m looking to get some information on a coin I came across ..
I have tried to do some research but have found nothing on it.

Looks to me like it is in the same series as these coins:

https://en.numista.com/catalogue/pieces90788.html
https://en.numista.com/catalogue/pieces90829.html

Since those two are the Queen as a young woman and as she was in 2016, I'm guessing your coin is the first in a series of three commemorating her 90th birthday.

Not sure how many versions there are - I found these six (1 to 6 as shown below) on eBay ...



- Guernsey 2016 gold plated 50 Pence -
There may be others, or not all of those in the same series.
So there are those two (2 and 6) in the above links, plus the first one (3), and three others (1 and 4 and 5).