I have a few nice Krag bayonets but am not real knowledgeable about some of the details about them historically. I have seen a few listings on ebay for "undated" Krag bayonets. Is there such a thing officially or have these just been altered or had the date polished off? Some have claimed that they are rare. I don't believe that to be true but thought I'd ask. I think that there are a couple on ebay right now.

Thanks for the input.