I'm working on a mystery chest that has riveted-on drawer knobs. They consist of three pieces - a long split rivet with a large head, an inverted eyelet, and a backing plate. I've seen Star and SIPCO chest with similar knobs in the past, but these are a bit different. I don't trust that I can remove all of the knobs without breaking the lags of the rivets off, so I am seeking alternatives.

The rivets are 1 1/8" long overall, and have a 5/32" shaft diameter. The head is 1/2" in diameter. Does anyone have a source for these split rivets in nickel?