I’ll need to read this more than once but this is it, I’m sure. I was looking at it just before I checked back in and was about to suggest it was a sort of ‘star’ drill because it appears to have been hammered at the opposing end, but....
This has been nagging at this 51 year old since he was about 11!
Thank you, Stan. I hope I can help someone out sometime in the future like this, like I said (or think I did): this was ‘bucket list’ stuff; hadda find out what it was before I died!