Here is a Mercury survival pack from Scott Carpenter showing his training Solingen knife, not his personal knife. From what I understand his personal Orlando made Astro made the flight with him, but it was stolen after splashdown. Randall made a replacement, but its whereabouts is unknown. If you can't see the knife very well, the link is below the photo.
https://commons.m.wikimedia.org/wiki...t_-cropped.jpg