Those are nice shots. I have a slightly less found Perkeo I with the Color Skopar, but I have to say that the Vaskar has always been very acceptable, just as your finding. In my experience, lenses like the Vaskars on the Voigtlanders, and Novars on some of the Zeiss cameras have been very good in rendering sharp images. It's probably safe to assume the names like Voigtlander and Zeiss never used bad lenses. I've shot 105mm Vaskars on the Bessa I, The helomar on the Bessa RF 6X9, and the 75mm Vaskar on the Perkeo. The Bessa I and the Bessa RF both came with masks to shoot both 6X9 and 6X4.5. I was fortunate enough to find both of those camera's complete with the internal mask. So, between a Perkeo, and either a Bessa I or RF, most of the 6CM formats are covered. It's interesting that the Bessa II never had the intermediate mask.
Anyway, I like your pics and they're great examples of the capability of the less expensive lens. I never had a gripe on the lenses, but I disliked the temperament of the Prontor shutters and the slower speeds.