I'm not too good on the picture thing so here's some of the markings. St Etienne proof, EPR. Superilure, Medaille D'OR, Acier AU Creuset, what looks like a C or G with Arrows through it in an M(?) pattern. On Action flats what looks like a Crown over PT. It was a "short" 16 but chambers were lengthened in 60's. Crown and PT under each barrel with choke markings that I can't quite make out. Murat Cizeron is engraved on water tables and under each barrel. Pins through action side to side and timed screws at bottom of action, in fact throughout.
Very fine lined engraving on most of metal work and concentrated around top lever, faces deeply engraved with oak leaves and toplever mounting bolt and lever engraved in a circular rather floral pattern. There is B.A on underside ofthe left barrel. Hopefully we'll have sunshine tomorrow so that I can recheck some of those markings that I'm having trouble reading.
