Hand forged after drop forged hand ground carbon steel most likely 1950s to 60s Sabatier Professional slicer in good used condition. With fresh edge and an oil refresher on the handle. It had seen some light rust be has been sharpened some but the blade is still very full. 

Sometimes these square bolstered French knives are referred to as "Canadian pattern" knives. Keep dry when not in use to avoid rust, carbon steel will naturally develop a patina with use.

Approx 9.5" cutting edge, 14.5" overall and 4.3 oz