First I thought it is 1986D-1MM-016 D/D WEST (MDS) But I look closely to Mint Mark location it is off. Any Idea Masters
I found 16 on copper coins. http://coppercoins.com/diesearch.php?date=1986&date1=1986&thismint=d&thistype=mmom&page=1 You are right they don't seem to match in placement. These zinc RPM's can be real tricky cause split plate doubling is a factor.