It's critical to diferentiat between a combat saber and a dress saber. Typically, any saber we see today from the Imperial era, Weimar era, and TR era, that have been sharpened were all done post war by the vet, or the vets offspring. You also have to look at the nature of the sword. Theoretically, a degen style saber would be intended for a thrusting and stabbing motion, where as the saber itself would be intended for a slashing and cutting motion. Recently we had a topic on the switch from sabers to dress daggers during the reich. Sword became totally impractical during the 1st world war because of the time spent in confinded area such as the trenches. They were more of a haggle than anything else. The last truly functional sabers were intended for cavalry units mounted on horse back. Functional sabers of course became a moot weapons when cavalry units became mechanized. In short, I would guess your swords were sharpened sometime after 1945, even though they are imperial era pieces.