Marco Mainspring #110 for 16s Elgin Factory No. 2542 - Steel

Marco Mainspring #110 for Elgin 16s movements, Factory No. 2542, DB&H end, steel, new in either very frail or replacement envelope (the original envelopes are often pretty well shredded). C & E Marshall marked this one as specifically for a "Class 41 Lord Elgin" but it fits others as well. It's worth noting that Marshall usually repackaged factory mainsprings, which this is indeed one as it is marked E.N.W.Co. Elgin mainsprings are usually coated in some very sticky grease and must be thoroughly cleaned before use. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.