I have a thimble I am not using it is adjustable so it can be made smaller or larger depending on your finger. it is open on the back with just a couple of strips of metal bands to adjust it
if you pm me with your address I will send it to you.
I have a leather one which is ideal for me as it fits over my swollen knuckles
ooppss just read another post and it is the one like a spoon.