The top one has a slightly dark band on the right side, most evident in the sky. Quite easy to crop out (though not helping the composition) but it looks like a sticking shutter to me.
Neat Image could be used to soften the grain, but be very careful with it, no more than about 10%
A trial version can be downloaded from Neatimage.com
As Tim says, there is a yellow cast and they are soft.