
48 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Seagull Master Series Transparent Caseback Double Tourbillon 43mm is the Hublot Big Bang Unico Magic ($30,000) — racing chrono and Looks nearly identical. If price is the constraint, the RGM Watches Model 600 Chrono at $4,450 (vs $40,999 for the Master Series Transparent Caseback Double Tourbillon 43mm) covers most of the same brief. From the independents, the Seagull Master Series Double Tourbillon 43mm is the standout microbrand take — shared caliber (Seagull ST8080) and Same family (Master Series). Stepping up, the Patek Philippe Complications 5249 ($411,388) is where the same idea goes with a bigger budget.
Independent makers covering the same brief — usually with something the mainstream brands don't.
Established brands covering the same brief at a comparable price — same case size, similar movement family. Often the deciding click for a new buyer.
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.