Hello,
Really thank's a lot Ramba and Kai for your precious comments
and quick help for nail it !!
Nice surprise about the three ( maybe 4 ? ) crowns calyx ferrule tending to a high rank model ! ( didn't know this symbolic at all, beginners luck !
)
I'll have to try to clean it a little and see
( brass ?. low grade tarnished gold, goldened silver...)
I'll post better pictures soon
Kind regards