Looking for info on this gun. Right barrel is marked Poichauvin AR 2. Left barrel is marked A Montargis. On the left barrel flat is stamped Choke Bored Perfectionne and Roncharc Cizfron. The flats also have a crown over the letters PT and the numbers 6.5. Each barrel has,forward of the flats, the number 17.0 and the left barrel has stamped Canon Surette over Double Epreuve with Garantie in between them, all in an oval shape.There are some other words/letters/markings but they are faint. The gun has swivels, straight grip and a splinter FE. Anyone have any ideas/knowledge on this gun? Thanks for any info. Mike