I found this near mint, 2½ pound bruiser in a box of "photo junk" at a yard sale the other day, a Yashica TL Electro X. Fortunately, it was still in its case and hardly had a mark on it. It's also working perfectly and that big 55/1.4 lens is amazingly clean. All it needed was new light seals which I replaced last night. This camera accepts M42 screw-mount lenses and has a metal-bladed electronically controlled shutter. One nice feature about the shutter is that at the slow speeds (below (1/30) the shutter speed dial has no click stops and intermediate settings can be used by small adjustments of the dial. It also has a mirror lock-up feature for vibration-free, long exposures. And, it uses an easy to find battery (PX28), like the ones used on the Canon A-series cameras.