TWO Borel Material Balance Staffs for Waltham 0s Model 1891, P09, No. 19369 - New

TWO Borel Material Balance Staffs for 0s Waltham Model 1891, Pivot .09, Factory No 19369, Refill #40, new in package.  Actually, they are probably factory balance staffs that the supply house just decided to put in a Borel envelope. See images for further details. I specialize in hard to find watch parts and all parts are sold with an unconditional guarantee.  Images do an adequate job of representing the item.