There's a dark stripe on the tail cone and partially visible marking SD... in front of the fuze, thus it is the SD 1700.Image 1: I am not sure: SC1000, SC1200, ....
The single colour stripe is an interesting feature, by the way, as - according to a 1942 manual - the SD 1700 was to be marked with an unique yellow-blue-yellow stripe (as a HE bomb with enhanced penetration). The bomb in the picture is dated February 1941 though, so I suspect, either the two colour stripe was never actually used, either it was introduced on some later date. We've already had a picture of an alleged SD 1700 with a single colour stripe in this thread, anyway.
Yes, SC 500 K probably.Image 2: I think SC500...