V2:
Used a sewing needle to make a hole in a strip of thin metal taped over the 3/8 inch hole in the body cap. Much sharper than 1/32 inch drilled hole. Same pin hole in aluminum foil was not as good. Tried sepia and B&W, but color helps bring out more detail in the soft image. Long exposures and extremely dark image in the viewfinder makes framing a long trial and error process.

V1:
Antique Zenith radio captured with a 1/32 pin hole drilled into a thin piece of metal taped over a 3/8 hole drilled in in the camera body cap. Never did this before so started with 5/32 pin hole and worked down to 1/32 for a sharper image. As I also managed to drill a hole in the palm of my hand with a 3/8 drill bit, I wasn't in the mood to try for any smaller holes. Sharpening set to highest, saturation set to lowest. I hope the softness works for this image. BTW, framing is done trial and error as the image is too dark in the viewfinder, but camera's exposure meter still worked fine.