Xguard threw me, I can't pin that one down and it's not shown in TW's Luft book, closest is a Klass variation which only has 4 acorns on the xguard upper engraving, however the profile is different to mine and the one shown in Toms book, unless it's the photo.
As Wotan remarked that grip sure looks like a real ivory one and if it is it's probably worth more than the dagger. Sorry can't be of more help.
Nolan
