Dear Jean, Gustav and Alan,
thank you for respond and opinion. I agree with Alan, I am as well never have seen a such blackened ivory hilt before but all I have seen before were very worn. And agree with Gustav and Alan that it could good be possible that it is an other material as I have hoped to see.
But as you know I like to gamble by ebay.
And the price I have paid (
http://www.ebay.com/itm/2-VINTAGE-BA...vip=true&rt=nc) was one which is ok for a gamble. We will see if it was winning gamble when I have received it.
Regards,
Detlef