I obviously don't pay enough attention Steve!

Thanks for that pic, and for raising this

Just looking through the knives I have to hand, with an illuminated magnifying glass, the following have exposed pins (had to blow out some muck and pocket fluff to see)...
2019 Guardians Lambsfoot
AW Ebony Lambsfoot
Ashley's Choice Lambsfoot
AW Rosewood Big 'Un
These don't...
Hartshead Barlow
Sambar/Damascus SFO
Knives in both categories were made by the same cutler, which makes it peculiar. I have to say, it's a long time since I actually looked!
Thanks buddy, it was fairly inexpensive at least
Great to see you call in Christian, a rare treat my friend!

I hope
pmew
is doing OK

Those nickel silver bolsters won't patina easily, GEC used the good stuff!

Nice blade patina though
It is indeed Christian, I think that would be a rather expensive knife

I remember, years ago, when I was in my late 20's, I found a small piece on the beach. I took it into one of the Jet shops, and a lady showed me a trick whereby the Jet would briefly appear brown if you rubbed it with the sandpaper on the edge of a matchbox. She said it was worth around £10, and offered to buy it, but I said I'd prefer to keep it. Back in Sheffield, I showed it to my climbing buddy. He looked at it, and said it was something similar, but not actually Jet. I related what had happened in Whitby, and he told me that the matchbox would have the same effect on a range of similar minerals, at which point, I remembered that my friend, who had trampled on my dreams, had a doctorate in geology, and probably knew what he was talking about!

I did look at using coal for some covers. A small collective of former Yorkshire miners were producing various items made from a material they had developed, which I think was essentially coal and phenolic resin. I approached them about it, but they were hard work to deal with. I did buy some of their products, as samples though, a number of small 'fairy doors', which were passed on to the children and grandchildren of a few members here
Thanks Pete, hope so
Thank you very much JJ
Good morning Guardians, a busy day today, so I'm going to put these knives back away, and get on with it

Have a good one Guardians, I'm carrying my Hartshead Barlow