US WWI M1907 Leather Sling - Marked ROCK ISLAND / ARSENAL / 1907 T.C.C(SMA3605) For Sale

US WWI M1907 Leather Sling - Marked ROCK ISLAND / ARSENAL / 1907 T.C.C (?) (SMA3605). (The T.C.C marking is hard to make out) This sling has excellent markings and is over 100 years old, it was manufactured in the first year of M1907 sling. Good condition for it\'s age, still intact and complete with som cracking and an insision near the ring on one end (see pictures) I am not sure if this is normal for an early sling like this one or not.
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