If you are asking someone to do assist you, my recommendation is to make it as easy as possible for him to do it. Try reposting vertically and blow up the text portion.
These 2 diplomas are issued for workers linked to railways field, but for different specialities. These diplomas are very similar and differed only on details: the first one is for railways contruction and the second one for locomotive and wagons construction
The 2 diplomas are from the same series. They are similar, except for the fact that the red star on the locomotive is replaced by 2 hammers (symbols of soviet railways).