Interesting. The Remington site lists No. 10F - "Premier" Grade
https://www.remarms.com/firearm-history/model-10

This gun is marked 'Model 10-F'
https://www.rockislandauction.com/detail/69/496/remington-arms-inc-10f

From Researcher on the Remington Collectors site from 2006
The 1913-14 catalogue of Remington Arms - Union Metallic Cartridge Co. (the two companies were combined beginning in 1911) and the Model 10A "Standard" Grade is listed at $27. The Model 10B "Special" Grade is listed at $45. It had a checkered stock and forearm of selected imported walnut made to order to your dimensions at no extra cost. The Model 10S "Trap Special" Grade was $40 and had a matted barrel and a checkered straight grip stock and checkered forearm. The Model 10C "Trap" Grade was $45 and had nicer wood made to your dimensions. Higher grades with engraving were the Model 10D "Tournament" Grade for $55, the Model 10E "Expert" Grade for $80, and the Model 10F "Premier" Grade for $120. A raised matted rib was $6.75 extra on any grade.

By the 1918-19 catalogue prices had risen sharply right after the Great War -- 10A $42 and with rib $51.25; 10B $70 and $79.25; 10S $61 and $70.25; 10C $70 and $79.25; 10D $81.50 and $90.75; 10E $122.25 and $131.50; and the 10F $183.50 and $192.75.

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