Hi,
Unfortunately, no one can answer that query as no crest is shown in that graphic - the helmet has nothing on top of it at all. The Arms as recorded in Rietstaps Armorial General do not make mention of a crest either. Many continental arms do not have a crest for one of two main reasons - either they are so old that crests weren't in use until a later date, or that the person was not high enough up the pecking order to be able to participate in tournaments.
The Arms are, as the label says, the arms of SILLIMAN of Neufchatel which, if my memory serves me correctly from geography lessons at school, is a town in France - SE of Dieppe and between Rouen and Amiens.
Azure a Chevron Argent in chief two Stars of six points Or in base a Terrace with a Tree leaved Vert and the Chevron surmounted by a Crescent Or.
Ciao.