
Mainspring
The collection launches soon.
Movement study
est. 2026
Before the city wakes, before the first notification — the crown between two fingers, three turns, the mainspring drawing tension.
05:47
Tuesday · February · 2026
This is what Mainspring is about. Not specifications. Not investment grades. The ritual of it — the way a properly regulated movement rewards patience with precision.
Every morning documented. Every reference number committed to memory. Every macro shot an act of quiet devotion to the craft.

Ref. ETA 2824-2 · 25 jewels · 28,800 vph
Auction lots at
2 a.m.
Screenshots of references that got away. Lume shots in a dark room. The hairspring that made you understand why watchmaking is the highest craft.

Lume Study
Tritium · Swiss T<25

The Hunt
Lot 247 · Lemania 5100

Hairspring
Breguet overcoil · 0.02mm

Caseback Story
Cal. 321 · 1962
“
I can identify a Lemania 5100 from a caseback shot. I don't own one yet.
— A lurker
All references documented · All movements respected
The conversation
starts here
Kenji T.
Is that the ref 2447 or the 2447A? The lug width looks wider.
11:42
2447. Pre-'67, no date. The lug taper is what got me.
11:44
Marcus O.
Where did you find this? That patina is untouched.
11:51
A regional auction. Nobody bid. Still can't believe it.
11:53
Community Poll · 1,847 votes
Bezel insert or no bezel?

Seiko SARB033
Wrist check · 29 May 2026

Longines Cal. 30L
Wrist check · 29 May 2026
Tissot PR-516
Wrist check · 29 May 2026
Apprentice corner
“Saving for my first Seiko Presage. Eight months in. The movement study posts keep me going when the overtime shifts feel long.”
— Sione F., Auckland · Apprentice watchmaker
The list
opens once.
No algorithms deciding what you see. No ads interrupting the macro. No engagement bait — just calibers, reference numbers, and the people who lose sleep over both.
When Mainspring goes live, the list gets the first post — 24 hours before anyone else.
I
Movement Studies
II
Reference Archive
III
Community Wrist Checks
The list closes when the account goes live. No reminders. No second chances.