I have collected old keys and locks for years. Some have been placed in other 3D art pieces, like the antique door from the coal room in the basement of my former salon building. I filled it with old stuff and sold it at one of Home Art Sales.
This piece, "Under Lock & Key", is on another piece of an antique door from Mexico. It was totally put together with home made dowels! This is one part of that doors third reincarnation. One modified section became the background for "Mr. Wooden Head".
This larger portion is now the basis for "Under Lock & Key", with very slight sanding in areas. The collected keys and locks are from all over the country and world, I guess. I usually look for some wherever I travel.
The best one is the in the top middle portion of the piece. I bought it at a flea market in Bogota, Colombia in early spring. My eye first caught a gigantic one like it, but it was very expensive and heavy. Then I saw this one: made in 1845 with a very ingenious method of security. Had to have it.
The foldable key is actually a jail cell key, which I purchased in Lake Charles, Alabama, in May, along with the cool hinged lock. Others, I can't recall where they are from...but notice the sardine can key! Personally, I think that is a funny addition. I do have an iPhone key I am seriously considering adding to this piece.
I used a polished up used bike chain to hang it...seemed to fit the heaviness of it.