I may have the opportunity to purchase this sword. The markings appear to be correct for his "Koyama Munetsugu Sak" signature but I am cautious as I know he had fakers signing his name to things during his lifetime. Everything about the sword indicates that the time period is correct and all of the components that are there are right, just wary of the signature. Anyone have any experience with his work? Or even just more experience with the markings. I found some info online but that was limited.
Thank you in advance for any assistance you may provide.
