oldlock wroteThe company reverted to the Hobbs & Co name later, so no the markings does not make it an early lock. It’s far more likely to be a later one IMO.
As oldlock says, Hobbs insisted the company’s products be marked only Hobbs, despite the legal name of the company changing to include his partner Hart sometime after the departures of Ashley and Fortescue. Locks continued to be marked Hobbs up to the takeover by the Chubb group.
At a time when almost all other locks (except Bramah) were still handmade, Hobbs made a selling point of being machine-made, and locks continued to be so marked well into the 20C, as many other locks were still being handmade.
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