I would say it ends with 48
The obverse side showing 4 fleur de lis within a diamond, that is not a British design that I can find, possibly French trading token or Jeton? The reverse short cross is a common design.
The obverse is very familiar but I cant put my finger on from where

I can think of a few that have 3 fleur de lis, but not 4, especially within a diamond shape.
Trading token is what I would hazard a guess at.
Can you take more pics but with the flash? that will show detail better thus making it easier for me to enhance.
EDIT: After searching a little more it seems it is a late 15th-early 16th century French Jeton, I found one with 4 fleur de lis within a diamond but it had more detail than yours as well as the reverse being completely different.
search around with French Jetons from those time periods, looks legit.
Restoration addict : Verdigris Removal : Zinc White spot removal : Iron Rust Removal : Silver brooch/necklace mount Removal