Fiducit - I think this is something to do with confidence or trust (Latin for sure).
Kynast is a family name - there's a fair few genealogists researching this, also a place Kynaston in Herefordshire.. maybe a clue?.
Smallis... no idea... I thought it was Smollis from the photo but that was just my guess from the not very clear angle of the lettering. There is a literary reference to Smollis in Old Fritz and the New Era http://www.fullbooks.com/Old-Fritz-and-the-New-Era4.html
"Sometimes when I see you so simpering, so modest and ceremonious, I ask myself, with anxiety, if it is the same Wolfgang Goethe, who used to drink 'Smollis' with me at merry bacchanals out of death-skulls?-" which I thought was interesting as it is a drinking reference... again perhaps a clue?
And having said all that I had another thought and found an entry in the German version of WIKIPEDIA here http://de.wikipedia.org/wiki/Schmollis
which when I put it through an online translator (my German being practically zero!), seems to offer an answer to your mystery... it's something about Schmollis and a drinking brotherhood.. perhaps someone who reads German can offer a better translation than the one I have here:
Schmollis (also: Smollis), already before 1795 belaid as a call under students connected with the request, to drink brotherhood and to address informally itself therewith in the future. The origin is becomes unclearly, generally the concept of lat. sow mihi mollis amicus (German in about: "would be me shut!") diverted. The agreeing answer was "Fiducit!", of lat. fiducia sit "it would count!" (Of lat. fiducia "contract, agreement").
In some younger forms of student connections, the custom was developed late that the presiding of a student-like tavern shouts after termination of a song of the Kneipgesellschaft ("Corona") : "a Schmollis the fidelen singers!", whereon the participants answer with "Fiducit!" Of older connections, such phrases are rejected than a superfluous SchnĂ¶rkel.
In the literature, there are early records out of the first half of the 19th century, for example by * Heinrich Heine, that in the '1820er's in GĂ¶ttingen studied, book of the songs (1a VIII) and in * Elias Salomon, poem Â»FiducitÂ« from the year 1835, of August Wilhelm Briesewitz vertont.
Yet today connection students "Schmollis" drink if they would like to address informally itself.