Thimble marks mystery

I have two thimbles, strangely they both have the same marks on them, although they are otherwise unconnected. One thimble is of the “James Walker Wishes You Luck” type, the other has a maker’s mark “C” then another indistinct letter, possibly “M” or “H” or something else. Both have identical ‘hallmarks’ marks that I can’t interpret. Any help appreciated!

All hallmarks photos, please.
Henry Griffith & Sons, silversmiths in Warwickshire
Chester, 1923.
VTG Hand Carved Coquilla Nut Pomander Egg Thimble Holder + Thimble Chester 1923 | eBay UK

Thank you so much. The examples you pointed me to look just like mine!