Mine is bigger than yours! ;) The big one is a Panzerschreck, something I picked up many years ago. (Its pinned.) Which is silly, they are just an 88mm stove pipe with sights
A coulpe lesser recognizable pieces would be the Remington-Lee US Navy 45-70, and the S&W 2nd model with a serial number in the range that makes it a secondary martial arm in the civil war. Original Colt 1860 army, Jo-Lo-Ar, whitney phoenix 40-70 SS, and an unfired Chicago arms palm pistol. Also a few other s I'll let you figure out.

I will put in scraps later.