Thankyou, Spiral your suggestions will give me another area to research.
(sorry I didn't notice your post....we must have posted at around the same time)
Thanks Jeff for your input....unfortunately there are no serial numbers. The etching on the blade is very badly worn, I can just make out a crown and some 'foliage' type design ....so no clues there either. I did not realise that the 'horn' could be helpful in IDing the sword...I will post a better pic of it soon.