Hello
The big one of your spoons is a table spoon,
Model 400/1 from »
Fr. Bibus u. Sohn, Silber- und Electroplatedwarenfabrik, Mähr. Trübau« (Company’s name of that period) (transl.: Fr. Bibus & Son, Silver- and Electroplated Products Factory).
Fr. Bibus & Son was in their Czech country the almost important factory for hollowware products in Silver. Their plated product range was in parts the same.
(Back side of spoon is shown here)
For cutlery in Silver they cooperated with J.C. Klinkosch, in Vienna, Austria. And for cutlery in Plated they cooperated with «Berndorfer», in Berndorf, Austria, and «August Wellner Söhne», in Aue, Saxony, Germany.
Maybe you don’t know that only for marks, registered in Vienna Assay Office exist for the period of 1867 until 1922 exist a reliable guide, researched by Waltraud Neuwirth.
Until yet don’t exist a similar guide for all the other Assay Offices of the former Austrian Hungary Empire.
So it happens most times by incidence only that maker’s mark from other Assay Offices could be identified.
For that reason “maker’s” identity of your dessert spoon remain yet unsolved.
It could be that both spoons birthplace was: J.C. Klinkosch, Afrikanergasse 5, Vienna II, Austria.
Kind regards silverport