19th century silver bladed cake slice with carved bone handle

Antique 19th century silver bladed cake slice with carved bone handle. Hallmarked as pictured; our opinion is that this is Continental European, most likely connected to the Austro-Hungarian Empire. Made by B/E/H (initial rubbed) Bock; if anyone has information on this maker it would be highly appreciated.

An elegant piece with delicate shell motif to handle and stem, with pierced rococo fretwork.

Price marked at $500 AUD.

Measurements: 34cm length, 73.6 grams total weight.

Excellent antique condition, marks crisp and well-struck.