Need help identifying Kriegsmarine "boot knife"

[24thinfantry]

I came across this knife which I am pretty sure is Kriegsmarine based on the engraved anchor. However I am not sure of the era. I thought it was WWII but now I am skeptical. The knife is 10 inches tip to pommel. Its acid etched and Solingen.  I imagine its probably not worth a heck of a lot but I was wondering what would this knife be valued at?  I do not want to purchase it and find out i paid double the price, I do not even mind paying the retail price because I have a nice grouping of Kriegsmarine items it will display nicely with.  Thank you very much in advance for the help!  

[SARGE]

Most certainly a private purchase civilian style knife.  Is the maker "RODO" on the ricasso?  

 

[Proud Kraut]

Could you post a close-up of the marking please.

[24thinfantry]

Sorry I do not have any other close-up pics of this knife right now. And I believe it is marked RODO. 

[SARGE]

There are two companies named "RODO" that come to mind.  One is a WWII period German "RODO" that made belt buckles.  I am not aware of them making any edged weapons.  And, there is a British "RODO" that did make knives from before the war until now.  It is possible that your knife was British made instead of being German.  I can't make out the wording below the "RODO" etching.