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Comparing Constant Force (FB vs A&S)
Given the proliferation of content here on these types of movements in recent days, I thought adding this excellent comparison video would prove beneficial to all who haven't seen these pieces in person........

Review
DonCorson · Oct 23, 2016
Explore DonCorson's hands-on review of the Arnold & Son Constant Force Tourbillon. Discover its symmetrical design, constant force mechanism, and tourbillon performance.
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Wow…
By: Rock1 : March 30th, 2023-10:03
PS-M calmly explained the beauty and methodology behind the two very different movements. Very cool how he explained how the revived names pay homage to how the two original watchmakers solved the problem of decreasing energy from a mainspring winding dow...