
Hermle Clock Barrel No.21 & 20
H8229Hermle Barrels complete with arbor and mainspring
Factory part No. is usually stamped on original barrel
Part no. 20 or 21
Mainspring size 17 x 0.40 x 1200 x Ø38mm
Hermle Barrels complete with arbor and mainspring
Factory part No. is usually stamped on original barrel
Part no. 20 or 21
Mainspring size 17 x 0.40 x 1200 x Ø38mm