I had once dealt with many original Civil War cavalry sabers, and I never found any originals sharpened for use. The cavalry saber was for breaking collar bones etc., or stabbing with the point, so that it could be pulled out as the rider passed his victim, HOWEVER, Gen. N.B. Forrest, for one, had his men sharpen the saber's edge, so there's about a thousand sharpened sabers right there. I'm not sure there's anyway one could prove one way or the other as far as pyrate cutlasses. Seems to me pyrates were pretty independant cusses, and would do what he liked with his cutlass.