Well said Grumpy
I have a Himmler dagger with the numbered cross guard and one without to my untrained eye they are the same.
Personally I don't think it matters as the up to date information about these desirable daggers is now out there and with Ralf's latest book as well as TW's more and more collectors are becoming skilled up on these daggers but that's not to say if buying one make sure you have it authenticated with a money back guarantee.