What was the early Imperial Russian 1891 Mosin Nagant sling

[SSG_Lord]

Are you saying that the wire sling swivels are NOT the early Imperial Russia configuration, but rather Finn upgrades?

That's correct, the sling swivels are a Finnish upgrade that was never used by the Imperial Russian Army in WW1. They used the standard dog collar sling arrangment or one of the earlier sling set ups as not all M91's in Russia had received the 1908 upgrades prior to the start of WW1. Finding a WW1 correct M91 will be tricky, most M91's in the US were imported from countries like Finland, Romania and Spain who used them after WW1 into WW2 and carried out their own upgrades and modifications to them along the way. You can find Finnish marked M91's that are otherwise correct with a little looking, a big percentage of the M91's in the U.S. came here by way of Finland and not all were upgraded. It's also possible to find Spanish or "Balkan" imports still in near WW1 configuration but both saw hard use so less examples exist.