http://www.jaegerplatoon.net/AT_RIFLES2.htmFinland had bought one Solothurn antitank-rifle for tests in August of 1939. Later in March of 1940 another 12 Solothurn at-rifles of sub-version S18-154 were bought, but arrangements needed for this deal to happen were very complicated. As part of Soviet-German pact Germany during Winter War tried to stop all armaments deliveries to Finland. As part of this policy it stopped all Finnish armaments deliveries though its own territory and the territory it controlled. Besides this it also used diplomatic pressure in some cases to stop armaments deals from Central-European countries to Finland. Rheinmetall controlled Solothurn and had specifically forbid it selling antitank rifles to any country without its approval - considering the situation getting this approval was more than unlikely. During Winter War Finland sent some representatives to buy weaponry, ammunition and other equipment for Finnish military from foreign countries. One of these representatives was director B. Grönblom, who arranged this deal. The deal was interesting to say the least, Finnish side of deal was Finnish embassy in Rome (Italy) and with the Swiss middleman Solothurn was lead to believe that the customer was Swiss Army. The weapons were delivered to Finland by ship after being transported to Italy. When the Solothurn at-rifles arrived to Finland in spring of 1940 Winter War had already ended. However, when Continuation War started in summer of 1941 they were issued and remained in frontline use until early 1944. At that time few were issued to coastal troops and the rest were warehoused. At least one of these antitank-rifles was lost during battles in Hanko / Hango Peninsula year 1941 and four in battles of Viipurilahti Bay in summer of 1944. Last remaining four S 18-154 antitank rifles were sold around 1959 - 1960 to Interarmco, which took them abroad.
http://forum.axishistory.com/viewtopic. ... 0#p1516380JTV wrote:The dozen Solothurn antitank-rifles bought during the war were S 18-154 version, which was further development of S 18-100. Additional S 18-1100 prototype was bought in year 1942. It's unclear if S 18-1000 or S 18-1100 was ever issued to combat use during the war - they used 20 mm x 138B (Solothurn long) ammunition, while the dozen S 18-154 used 20 mm x 105B (Solothurn short).
Here ( Penti Palmu - Suomen Ilmatorjunnan Vaiheita 1925-1960) probably the sole S 18-1100?