first time ever I see a Mauser 98 rifle for the 7x61 Sharpe & Hart, of course made by Schultz&Larsen

http://huntershouse.dk/kat408-Rifler/side1963-Schultz-Larsen,Otterup,-Mauser-98.html

two 8x57IS Mauser's by S&L
http://huntershouse.dk/kat408-Rifler/side1970-Schultz-Larsen-M.98.html
http://huntershouse.dk/kat408-Rifler/side623-Schultz-Larsen,-Otterup,-model-98.html

I would say made in the late 1940s to 1950s, basic but inexpensive and fine working guns for every day

this must be one of the rare Gewehrfabrik Erfurt sporter - stemplet “GwF.E”
8x57IS sold by Poulsen/Copenhagen http://huntershouse.dk/kat408-Rifler/side560-P.-Poulsen,-Kj%C3%B8benhavn.html

another german mauser in 8x57is made for Poulsen
http://huntershouse.dk/kat408-Rifler/side11430-P.-Poulsen-Kj%C3%B8benhavn-8x57JS.html