These are some of the finest hand-wound, time-only movements ever made, and you don’t have to take my word for it – they’re a favorite of Roger Smith’s as well, who has said that from a watchmaker’s standpoint, they’re a dream to work on. I’m no Roger Smith nor ever will I be but once upon a time I did some hobbyist level watchmaking and the 30mm movements, including the 30T2RG, 30T2RGSC (center seconds) and caliber 266 really do seem to almost assemble themselves, and with regular care will last basically indefinitely. The only caveat is, it takes some hunting to find one in good, original condition (the cases were not especially moisture resistant and there are a lot of redials and over-polished cases out there) but your reward if you hunt a bit, will be one of the great, and still affordable, classics of modern watchmaking.

Approximately $1,000-2,000, depending on quality.