Selling: One Flex Alloy Mainspring
Free Combined Shipping
New Old Stock
Brand: BestFit
Details:
Metric: 1.50 x 0.10 x 266
Dennison: 6 x 11 x 10 1/2
Please Read: New Old Stock. Package is not sealed, however, mainspring appears unused. Due to age and storage conditions, may need cleaning. Please verify correct size for your watch needs before purchase.
Fits the Following:
A Michel 345
Bettlach 8450
Bettlach 8450-73
Bettlach 8451
Bettlach 8451-73
Bettlach 8454
Bettlach 8454-73
Bettlach 8455
Bettlach 8455-73
Bettlach 8456
Bettlach 8456-73
Bettlach 8460
Bettlach 8460-73
Bettlach 8460-74
Bettlach 8461
Bettlach 8461-73
Bettlach 8461-74
Bettlach 8462
Bettlach 8462-73
Bettlach 8462-74
Bettlach 8463
Bettlach 8464
Bettlach 8464-73
Bettlach 8465
Bettlach 8465-73
Bettlach 8465-74
Bettlach 8466
Bettlach 8466-73
Bettlach 8466-74
Bettlach 8467
Bettlach 8467-74
Bulla 51
Caravelle RO
Caravelle RS
Felsa 345
Felsa 347
Jeambrun 217
Jeambrun 217TCI
Langendorf 1036
Langendorf 1136
Marvin 535
Oris 450
Oris 451
Oris 452
Oris 453
Oris 454
Oris 456
Oris 457
Oris 458
Oris 461
Oris 462
Oris 463
Oris 464
Oris 465
Oris 466
Oris 467
Otero 156
Parrenin 61-63
Reconvilier 12
Reconvilier 120
Reconvilier 2310-2312
Ronda 4111
Ronda 4113
Ronda 4115
Ronda 4117
Ronda 4211
Ronda 4213
Ronda 4215
Ronda 4411
Ronda 4413
Ronda 4415
Ronda 4417
Savoie P62A
Savoie P72A
Vufe 57/51
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About Me:
"It’s not about having the right opportunities. It’s about handling the opportunities right." ~M. Hunter...
Growing up, handling things right was the only option my mother gave us, and I've carried that with me throughout my online selling career. With 18+ years of experience in vintage timepieces and horology parts, I built my business on one principle: doing things the right way. Inspired by my grandfather, a WWII-era watchmaker, I specialize in vintage watch parts, crystals, and horology books.
Every item is photographed and inspected by me—no stock images, no guesswork. I work to match the right parts for your needs, ensuring accuracy, fast shipping, and honest descriptions. Each order is more than a sale—it’s an opportunity to earn trust.
Thank you for viewing and considering the items I have listed.