via this auction "Low serial Oberheim MS-1 Mini-Sequencer, made in January 1976. The sequencer is just been serviced and ready for the future. Cosmetically it's in used condition with signs of use on the front panel and case, a few scratches and wear and tear (see photos). The unit is working on 105-125v and has a Japanese plug on the lead. The serial number is: 0005"