On page 186 in Gaddis' Randall Made Knives book, we see a letter from the Air & Space Curator Kenneth Newland referring to the 2nd Astro made as a replica for the museum, made as a "more accurate display."
Referring to the Scaleless Astro which was displayed in the capsule itself, and the other Micarta Astro being displayed to illustrate the workmanship of the knife.
Below is John Glenn's Astro, also on display at the Smithsonian.
Survival knife carried by astronaut John H. Glenn Jr., during the first U.S. manned orbital space flight, Feb. 20, 1962
I have sent a request for information from the Smithsonian. It will take a few weeks for them to respond.
It appears that Bo sent 2 Astros to the museum, one with scales, one without, and the 3rd is from John Glenn.
I do not know the status of these knives, whether they are still displayed or in storage, or disposed of. Hopefully I will find out the status.