For entry doors or other heavy duty purposes, late 19th - early 20th century salvaged 5" x 5" solid brass butt hinges. Price is for one but 10 are available, free shipping. Fully functional, original patina intact, the brass plates are 1/8" thick.

These are 6 5/8" tall from cannonball finial to finial, plates are 5x5", with some more measurements in the photos. (Just ask if you need others.) These are not polished, in salvage condition, but work well for heavy residential entry doors, the usual measure for 5"x5" hinges being doors 2.25" to 2.75" thick (though where an 80" door would usually take three thin modern hinges, you'd likely only need two of these). They weigh about 1 1/2 lbs. each.

I've used some of these myself, as initially we had a load of them, thanks to my uncle's horror at the senseless demolition of the old Harrison Building across from Philadelphia City Hall. (The Alfred Craven Harrison Building, see image #4, was built in 1894-95 at 15th and Market by Cope and Stewardson. It was a beautiful Victorian building. Parts of it were an elegant hotel. It had early electric elevators. But in 1969, even though it was fully intact and in use as hotel and office suites, they razed it to the ground in a matter of months. You'll see only a giant clothespin there now. (Oldenburg's 50-foot "Clothespin" sculpture went up in 1976.) My uncle was trying to rescue Philadelphia's architectural past early on, and things like the sad, frankly inexplicable fate of the Harrison Building were the impetus. At least he was able to save some hinges, along with bits and parts of other things.)

Apparently these were from just ordinary doors in corridors (there were literally 100s of rooms), but quality was high, as usual for old hardware. It's hard to find original solid brass hinges today, especially in large sizes, but these are (tested with neodymium magnets). All plates and ball tips are solid brass with removable steel pins for strength. If you, too, are trying to restore an old house with period-correct hardware, this matters. (Something like 95% of the things I see on the market now aren't actually solid brass or bronze at all, but the fine print reveals it's a mere microns-thick coating, which often looks fake, flakes off over time, and is really inferior when you need the color and patina to blend in with surviving intact pieces. The modern real brass repros unfortunately also look it, bad texture, rough edges, etc. They just always look off to me.)

No screws come with these, a bit of oxidation here and there, what you see is what you get, though if you have a preference for color tone, etc., from the 10 of them we have left I'll try to pick the best I can. We'll also have more old architectural elements and various antique and vintage hardware coming to eBay as I work my way through it. If you need something regionally specific (it's all from Pennsylvania), maybe send a note, I can keep an eye out.