
35 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the San Martin Automatic Dive SN0123G is the Orient Diver Watch ($285) — common cross-shop and Pro diver. From the independents, the Spinnaker Dumas Automatic is the standout microbrand take — common cross-shop and Shared caliber (Seiko NH35).
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.
Where the same idea goes when budget isn't the constraint: luxury upgrades and step-ups.