Suspension spring for movement model 200M/300M manufactured from 1969 to early 1978. Please check the back plate of your movement for "Jauch, Erhard Jauch or Heinz Jauch" and the number "77 with 6-digit serial number and the words Pendell 110". (It is very important to see Pendell 110. This identifys your movement as a Jauch 200 (single chime) or Jauch 300 (triple chime) movement.) FREE SHIPPING.