I had the pleasure of visiting RMK for the first time today while on a business trip to Orlando. Thank you to Gary, Jason and Scott for taking the time to speak to me. While at the shop, we spoke about my expedition to the spot where Gus Grissom's Liberty Bell 7 space capsule splashed down, our discovery of a 200 year old shipwreck nearby, my dive to 16,000+ feet to explore the wreck, and the condition of the items recovered. (See
http://www.davidconcannon.com/images/Atlantic_Sands_DIVER.pdf for more info.)
The items we found on this wreck, which was within six miles of LB7 on the bottom, were remarkably well preserved. However, the salt water can act like battery acid on carbon steel at this depth. If you look closely at the photo of the recovered knife, you can see where this happened. This scarring is not present on the knife in the Indiana museum.