If I'm not mistaken, this coil will get her done.
http://m.ebay.com/itm/DISSTON-MERCURY-D0-100-DO-101-CHAINSAW-COIL-IGNITION-/361534240374?nav=SEARCH
http://m.ebay.com/itm/DISSTON-MERCURY-D0-100-DO-101-CHAINSAW-COIL-IGNITION-/361534240374?nav=SEARCH