I recently acquired a Tikka over under 20ga 3inch chamber over 222 rem. It has no import marts only Tikka proof stamps with no model number. The 3 inch chamber is factory as it is marked 20/76mm. I have a Tikka/Ithica LSA-55 combo 12ga over 222 rem that is its twin but has Ithica import markings. Doing research I can find only that it was a very short production no numbers of production, year of production or value. Any info would be greatly appreciated