Help dating this razor, vintage Boker King Cutter

Can someone help date this razor? Its a vintage Boker King Cutter I picked up at the antique store. It looks like about a 5/8, full hollow, but I could be wrong as I don't know much about this stuff. I think its carbon steel, but I don't know. Looks in great shape though, surprisingly. I think the scales have been replaced, as the pamphlet says "black". Pics:

Attachment 138214Attachment 138215Attachment 138216Attachment 138217Attachment 138218

Bokers can often be dated by referring to the type of "tree". Here's a pic that might help you:

Attachment 138220

There are other pics available too - try a search on Boker Trees or similar.

James.

Would this refer to the engraving on the tang, or on the box/pamphlet? The on one the razor and the coffin looks like the 1924-1935 logo, but the pamphlet looks like the 1869-1900 logo (assuming the pamphlet belongs to this razor).