Tenpeny or Tenpenny: How To spell?
The word Tenpeny is misspelled against Tenpenny, an adjective meaning "Denoting a size of nails. See 1st Penny."
Tenpenny has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings tenpe & y which should not be misspelled with single 'N'
Wrong Spelling:  tenpe-n-y  Correct Spelling:  tenpe-nn-y 
Explore spell check of Tenpenny to spell without errors.