One of these days i will wise up and check my own database . i have a record of 4993402 with a 5-43 barrel, Smith Corona Bolt (or at least the bolt sleeve) that was listed on the Gunboards forum a few years ago. The note i have with it was that it belonged to an Austrian collector and carried an M73B1 Scope. It had the modified receiver marking.
Regards,
Jim
PS If this is the same rifle 4993402 also had a 2groove bbl, and a scant stock with an SAA rebuild mark.