No... Prentiss went out of business waaay earlier than that... Actually, I believe they got bought by Parker...
The nickel plating probably provides a few purposes. First, you can't have a bare vise because it would rust. If it was painted then there is a chance some of that paint could rub off on jewelry maybe? Also the jaws would have to be oiled but then that oil would contaminate their work. Second, when jewelers are using a little torch, again the paint would probably start to burn or at least leave scorch marks on it. Finally, people come to a jewelry store for shiny things, and old stores usually you could see the jeweler working behind the counter so having that vise plated like that kept the shiny / clean appearance.
I'd concur, generally, but I think there was another aspect to owning and using a vise of that grade on one's bench, both for traditional jewellers, and those who worked with small precision mechanisms requiring 'clockwork' techniques (dial indicators, etc.), one of personal satisfaction in having 'the best' of equipment for one's work, as well as, frankly, impressing one's clients with such attention to detail.
How many of you have noticed an automotive mechanic taking pride in a stack-up of highly polished Snap-On tool chests, with drawer after drawer of the highly polished wrenches, neatly arrayed in neatly arranged holders?
I have of those little Prentiss miniatures at my desk here, which I was given, back in the early '70's with an 1890's- 1900-ish? vintage oak jewellers' bench, after the bench itself had become somewhat deteriorated from long storage in a damp basement, and would have been thrown in the rubbish tip, otherwise.
Mine is the next fancier version, with the Prentiss swivel base, and was a 'work of art' when new, with the castings brought to an accurate, and very high grade of polish for plating......all the flats neatly reflective, all the radii matched for aesthetic symmetry. The 'moves freely but with no shake' fit-up of its workings demonstrates careful hand-fitting, and careful attention to detail in assembly is so evident a century or more later.
I can't even guess at the amount of time a worker at the Prentiss works had to put into that class of fitment. The the nickel is dulled, now, and has flaked off the iron in spots.....I really should feel motivated to polish it our a bit, I suppose, if only as a gesture of respect to the worker who did that now-incredible amount of hand-polishing and fitting, most probably a skilled European immigrant who was paid ever so little for his work.
I could not bring myself to discard the bench it was on, and passed the bench along to a woodworker who relished the challenge of restoring it......that bench was more a 'work of art' than the little vise, and would have been a wonderful workplace for its original owner.
Envision, if you will, a small size, but rather tall, of highly polished quarter-sawn oak roll-top desk, with a very large number of small drawers and pigeon-holes, the vise mounted on an oak 'riser' block, markings where a small lathe and its motor had been, and bracketting for a system of adjustable lamps. Many of the little drawers had been fitted-up with dividers and pigeon-holes for specific small tools and containers for teeny-tiny parts, and still had some tiny containers of watch screws, springs, and suchlike, marked for make/models of watches.
I've not the vaguest idea of the cost of such a workplace, when new, relative to the rate at which the original owner could bill his clientele for the work done there.......but it would have been a very serious investment, I should think, like today's stacks of Snap-On chests, maybe much more so.
Maybe more to the point, tho, would be that a simple artifact like that little vise is a wonderful piece of American industrial history, the fabulous obsession with design innovation and quality levels of the famous industrial production of the machinery trade in New England, in the 1800's, a field of endeavour then new to the world. This was the pioneering 'high tech' of its time, and may be seen in the 'fit and finish' applied to every sort of mechanism, from a tiny bench vise, to huge locomotives and steam engines, which, to their makers, not only had to run well, but display, in gleaming rubbed paint and nickel-plate finishes, the pride they took in their work.
Now.....all that said....I had a look at the ebay listing.......and am well and truly surprised.......its a wonderful piece of history, all right......but.... over $400, with shipment? Maniacal 'have to have it, no matter the cost' collectors, with more $$ than common sense???
(will we see a flood of so-called 'reproduction' Chinese counterfeit little vises on ebay next year?)
cheers
Carla