Compare the 1st row and 2nd row designs.
I'm convinced Hunter's watch is an IWC Portuguiser, just a slightly different model than the one Q has shown us.
https://www.iwc.com/content/dam/rcq/iwc/16/60/89/6/1660896.pdf
Pic was from this thread, have a read… https://twitter.com/TheArtofQuest/status/1318258654953394176