1173 Watch Mainspring 1.90 x 0.195 x 460 (18") (Calibers in description)

Dimensions: 1.90 x 0.195 x 460 (18")

End Type: T End

Material: Swiss Made Unbreakable

Calibers: 

Longines 17.69, Longines 17.69ABC, Longines 17.79, Longines 17.79ABC, Longines 17.80ABC, Longines 17.89, Longines 17.89ABC, Longines 17.89ZZABC, Longines 17.90, Longines 17.90ABC, Longines 17.90ZZABC, Longines 18.79ABC, Longines 18.80ABC, Longines 18.89ABC, Longines 18.89ZZABC, Longines 18.90ABC, Longines 19.90ABC