Blank Wilmot Breeden MRN key for you to have cut by your local locksmith. Typical use MG T series, Austin and Morris of the 40s and 50s. - Check your existing key or lock. Cross section shows hole key goes into. Your lock should have the code stamped on the surround. Codes run from MRN1-MRN54. We can also supply this key cut to code see KEY-MRN/WB Cross referenced as: Ilco #: 62DH Curtis #: B-10, B-11 Taylor #: 62DM Davenport Burgess (UK) #: HD19C OEM: Union MRN 1-50