need help to identify my spoons

[Jelly]

Hello!
I am searching for a special hallmark and, as I am german native, searched for a long time in the german speaking net. I nearly lost my hope, until i found you :)
Ok, my problem is the following:
I have six teaspoons with four hallmarks on the back.
The first one looks like a hallmark from vienna (Austria/hungary) and is dated at 1850. But instead of showing the lothing there is something that looks like a "CH" in a circle.
The second hallmark is just a swung "D" and belongs to the manufactor, right?
The third and the fourth hallmarks are at the back (at two spoons at the front) of the haft (i hope this is the right word). They are very, very small. One of them shows a royal crown with 5 cusps. the other on only shows a square or a squarish letter like D oder R (R because there are outstanding pins at the edges) But it's really difficult to identify this one.
I have made a picture from the first hallmark, it's impossible to enlarge the small ones.
Thanks for your help!

Jelly