More and more watch companies have in recent years confirmed their haute horology status by developing in-house serialized calibers. While small independent makers have offered unique movements for years, their needs don’t typically require the serialized production of base-calibers required by larger companies, so here we’re showing primarily the work of larger firms.

It took the specter of reduced ETA ebauche availability to spur many watchmakers to invest in full-throttle base caliber production. Other companies didn’t want to be left behind as competitors announced in-house calibers.

Whatever their motivation, larger Swiss watch companies have launched many new in-house calibers recently, and on these pages we have assembled many (not all) of the more recent, and notable, debuts. These are firms with more than one collection largely focused on in-house calibers, which we openly define as movements designed and assembled at the manufacturer’s premises. This listing is not all-inclusive of course; next month we will cover the in-house work of many small and independent firms.