Green’s Dictionary of Slang

sneezing coffer n.

also sneezing scoop
[SE sneeze + coffer/scoop]

a snuff-box.

[UK]Vaux Vocab. of the Flash Lang. in McLachlan (1964) 266: sneezing-coffer: a snuff-box.
[UK]J. Burrowes Life in St. George’s Fields 27: Sneezing scoop, snuff box.