What would you say the value of this grinder would be today on the used tool market?
(Vintage Delta Grinder 1945) Post #46 by WWIIjeep Re: Show us Your Vintage Bench Grinders!!!!
In that condition--i.e., "plug and play" complete, with high-quality wheels and a single-phase motor--anywhere from $100 to $350 IMO. The lower end of the range for one that might need a little TLC and/or new wheels, and the upper end for one in the condition of that one. With the OEM cast-iron stand, add another $50 to $75.
The ones that are occasionally found for less than $100 usually are almost always missing one or more parts (end wheel covers, tool rests, etc.), or need new wheels, or need new bearings, or need replacement glass in the eye guards, or they're 3-phase instead of single-phase, or all of the above. Some of the parts can be hard to find--even on eBay--and are rarely cheap.
There's really nothing comparable being built today. The current crop of Baldor grinders can't match it, and the other former comparable--Wissota--stopped making grinders a few years ago (Wissota actually made some of the Delta-branded grinders of the 1980s-90s).
That old Delta will run circles around
any Asian import grinder in terms of power, smoothness, and quiet operation, so one other way to look at the value of an older US-made industrial-quality grinder is simply compared to the brand new price of a similarly-sized import, and even if the asking price of the old grinder is higher than the price of a brand new import, the older grinder will likely be a better value in the long run.