Auction description was :
This rare and desirable ex-Soviet Finnish captured and rebuilt WWI era hexagon receiver 1891 Mosin-Nagant Bolt Action Rifle was rebuilt by Tikka with the heavy stepped barrel in 1927. It is a 5 shot 7.62x54r caliber rifle with force-matched bolt; Finnish stock, SA proofs and is complete with cleaning rod and sling. Import marked, condition is good, with a very good bore.
I checked at the 7.62x54Rnet "relative rarity" web page and it does seem to be high on the rarity scale.
Sorry for the pics--they are from auction listing--will post better when it arrives.