Rare vintage 1927 Conn sterling silver flute - extra keys and 2 extra headjoints

Description

Rare vintage Conn sterling silver (head, body, foot, keywork) flute made in 1927 (serial number), B foot, 3 protection end caps.
It has some rare extra keys (2 trill keys + low B lever for left small finger) and 2 extra headjoints (gold-plated and ebonite).
Total length with silver head: 71,6cm / sounding length with silver head: 64,1cm.
See pictures, offers welcome for this rare flute.