Yours looks OK. I realize in looking at my picture that I photographed the wrong gun, and that one has the little "S" tip broken off the spring, though it still works OK. It is easy enough to check the bolt and be sure it springs back up if pushed down. If it will engage the front cylinder notch when it is in the right position, then the bolt and spring are OK.
But also involved in keeping the cylinder from rotating when the hammer is down is the cylinder latch. Many have the little lip worn off.
I say again, those guns were not good designs and trying to work on them is like herding cats. Just when you think one problem is solved, another crops up.