Vintage 1950s Necktie Woven Silk Peacock Feather Pattern Tie Keynote

This is a very attractive tie featuring a woven peacock feather pattern in green and black on silver grey - I’m fairly sure that it is silk.  The tie is a little difficult to date, but I would think mid-1950s, sometimes between the time when loud ties were popular and before the skinny tie became popular. It is unlined and the tag reads “Keynote” - there is a second label with the codes “C 6/25” and “C 6/10” printed on it.  I’ve read that unlined ties generally date to the 1930s, but I don’t know if that is an absolute rule.  The tie measures 53” in length and has a width of 3 1/8” at its widest.  It is in very clean condition - looks great and ready to wear.  This is a great looking tie - great addition to a tie collection or just a nice piece to wear!