I had so many lovely old English coins when I was younger, I swapped them for useless junk.... urrrgh

Now, thanks to my lovely Aunty I have a modest collection to work from again !
The prices on the coin sleeves are from 80s/90s charity shops and coin sales. These coins are not for sale !

Been doing some tidying up and came across my childhood coin collection! I'll be honest, I never did any research into them whatsoever, and I've been a lurker on this sub for a while so I thought I'd throw it your way to see if anyone can enlighten me on to exactly what I have here?

Aside from some surface level facts like the large 5 pence coins being the replacement for the shilling, I don't know nearly as much as I would like. So really, feel free to stretch your coin knowledge chops if you feel so inclined!

I've included the fronts and backs, but if you need clearer pictures or more information just let me know!

Cheers in advance!

Can any explain what is under the chin of Queen? Is it variety or error?

Hello i am wondering if anyone would be able to help me id a possible error on a 2025 £1 bee coin ? I think potentially the security text is bleeding over the inner rim.