Help ID this 22LR mag

[nwilliams]

I came across this magazine the other day and I can't figure out what it goes to. There is nothing stamped on the bottom and the only marking I can find is a "P" on the right side of the floorplate.

Any help would be appreciated, thanks!

 

[BigBore44]

It's a magazine for a High Standard Sport King.

Edit: At least that's what it looks like to me.

 

[nwilliams]

Ah yes! I believe you are right.

Thanks!

 

[BigBore44]

No problem.