DishNet Superdish for 121° (and 105°)
Yea, the one with the tall oval horn probably has "FSS" on its label.
That's a bandstacked Standard 10750 LO LNB. <--- which you might want to use
The other two , are DBS 11250 (?) LO and circular.
In a minute, I can figure out which dish those came from, but you probably already know.
edit:
Okay, you have the 121° type 2 dish 'n LNB assembly.
Below are pictures of the 121° type 1 (different manufacturer, different dish, different LNB configuration).
Also, the 105° type 1 and type 2.
(check file name for exact type)
Zoom in on the LNB assembly in these drawings to see how they differer
Couldn't find where these had been previously posted, but since I saved a set, here they are again.