From bottom to top:
A Weimar K98K made by the Gustloffwerke Co. in 1944. The numbers for the (refinished) stock and barrel match but are different for the bolt . This was common as US soldiers would pick up a rifle and a bolt assembly for trophies from the separate piles that the Germans put them in after surrendering.
This was passed down from my Aunt's father to my Uncle who then gave it to my dad where it sat in the above gun rack (in a different den) for over 25 years, then I got my grubby hands on it.
Yugoslavian reworked K98K w/ Yugo communist crest. This is my 'field piece' for WWII re-enactments :
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And finally, a Japanese Imperial Navy issued Katana:
Tang photo added by request of Weer'd Beard. Any further info on it would be appreciated.
Thanks to the G/K43 Community Forum for the info on the Mausers.