First not sure is the Mauser front sight, maybe from a WW1 Kar 98 or some other type with the ears. It's probably part of the same group of Mauser parts from a sporterized rifle.
The rusty band with integral sling swivel could be from any one of a number of guns, but probably and older muzzleloader based on the thickness at the top and thinness at the bottom (if that makes any sense).
The sight with the protective ears is probably from the same Mauser that was sporterized. Might be a Kar 98 WW1 or other Mausers from other countries.
If you want to send me something, the only one of those parts I could use is the sight hood for my mid 30s 03. It's not necessary for you to give it away. Its worth some money.
regards
badger