I'm really glad I've dug mine out; I have it on the desk before me these past twenty four hours and it's sent me on a little wander down memory lane. I'm definitely going to bring it back into use for food, no good at all hidden away in a box all these years. Next rainy day I'll make it a jacket
The asterisk and Maltese cross were logos used on Joseph Rodgers and Sons knives. The currently made knives still bear these symbols, the right to use this is now owned by the Eggington Ltd. If you search on British blades website there is a picture of this type of knife being sold as a hunting knife from an old catalogue.
The markings originally belonged to someone else, but Joseph Rodgers kids registered it to themselves in the 18th century... thing is with your knife, that isn't exactly their mark, just a crude approximation of it.
Then again,. I'm probably doing panto so what do I know.