Do any of you gents have any examples of the 1907 pattern sling used on the L42 which carries 70's or 80's marks?

I recently read an article which stated the 1907 pattern sling which was fitted to the L42 when it entered service was largely gone from the CES by the end of the 70's when by the wide green nylon sling had replaced it.

After reading this I have been turning the house upside down looking for a 1907 pattern sling which I have had for several years and is buried somewhere which has a ink stamped 2 81 on the strap and then under each claw it has a broad arrow with 9 81 stamped. I have always assumed the ink stamp is the US manufacturer's mark and the broad arrow mark and date is when the MOD accepted it which suggests that pattern of sling was still in service with the L42.

Your thoughts please, and when I find it I'll put some pics up.
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