Mauser K98 byf 45, Need Help with Analysis/Valuation

[gtodan]

The bayonet lug/front cap are missing too...wonder how/why that happened. The pin has to be driven out so it wasn't an accident. I doubt it's lying about?

Everything secured by screws.

---------- Post added at 11:54 AM ---------- Previous post was at 11:53 AM ----------

Looks like a sling for a gas mask can.

By ser nr your 98 was made in Jan 45, just before Oberndorff changed their code to svw.
The sling is correkt for your rifle. It is an odd ball and fairly rare. Are there any markings on it - would be an ink stamp?
Sarge