ANTIQUE LATE 19TH / EARLY 20TH CENTURY FRENCH OBOE DELARUE TRIEBERT SYTEME 4
It was made in the late 19th or early 20th century and has a slightly modified Triebert System 4 fingering system that includes a double open hole for L-3 and a single open hole for R-1. For the lower range, it goes to a low B.