I just picked up a Madsen M47 with bayonet and sheath. The rifle is in the 5500 serial number range. I expected the bayonet to have a matching number but it has no number or markings of any kind. I have seen some posts on the internet that some M47 bayonets were not numbered. Is this correct and what impact does this have on the value of the bayonet and the rifle? Thank you for your assistance!