I purchased a unisued m5a1 bayonet . I have looked in all my books and can not find anything like it instead of the round type tip it has a clippoint it is marked imperial. is this maybe a prototype . I also got a pilots knife that I think is a commercial grade marked camillus 10-1983 polishedsteel in nice heavy black leather sheath and can not find any info on it .It is in excellent condition .I would like to know what they maybe whorth nice to know if i got as good a deal as I think I did thanks novaguy