1005553 Mainspring BA167 Unopened from factory but seasoned! Probably a barograph spring but not the standard Gluck one, found some of these among the normal ones. Mainspring BA167 NOT for standard Gluck barograph clocks see other one we sell. Measuring: 0.28 thick(Strength) x 13mm high. diameter of spring as rolled up without wire clamp is approx 29 mm should suit a 40mm barrel diameter Minimum order value is £18 plus VAT - this item cannot be ordered individually
