Coin, token or Jetson found on Malmö beach [solved]

Hi everyone, My name is Cori. Chatgpt suggested that I reach out to you for assistance in identifying this lovely coin that I found today on a beach in Malmö Sweden. I love it and just want to know more about it. Many thanks for taking a look and thank you for having me. 

Kind regards,

Cori

 On top left of any page is the Catalog tab - 

I went there and put in what is on your coin 

50 

three crowns 

https://en.numista.com/catalogue/index.php?r=three+crowns&st=147-150-149&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=0.50&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&c=&wi=&sw= 

 and there are 54 results, yours being the last coin on page 1. 

I was just getting to Sweden something like this:  N#37936

ZacUK

 On top left of any page is the Catalog tab - 

I went there and put in what is on your coin 

50 

three crowns 

https://en.numista.com/catalogue/index.php?r=three+crowns&st=147-150-149&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=0.50&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&c=&wi=&sw= 

 and there are 54 results, yours being the last coin on page 1. 

Oh! Much better than my suggestion but way less interesting.

 For comparison 

 Colour change and corrosion most likely due to salt water. 

Awesome and wow! Thank you for solving this so quickly! I am very grateful.