Cofer or Coffer: How To spell?
The word Cofer is misspelled against Coffer, a noun meaning "A casket, chest, or trunk; especially, one used for keeping money or other valuables."
Coffer has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Co & er which should not be misspelled with single 'F'
Wrong Spelling:  Co-f-er  Correct Spelling:  Co-ff-er 
Find more incorrect spellings of Coffer to spell right way.