A working sample is a specimen that was not officially issued or handed over to the organization that ordered the medal. This medal has been in the specimen archive of the original minter. It has several mishandling marks, nevertheless it’s still a rarity.
A letter of provenance was issued when I purchased this medal from company that originally struck 2M-675. I am the first individual in the chain of ownership (other than the original minter). M& R classifies this medal as a pattern (due to it being lead). This medal then should be classified as a Lead Working Sample Pattern.