Thank you both for your comments.

The piece in the ebay auction reminded me of my vase, because the texture is so similar.
Even among pieces which all use the ´overshot´ technique, the result can vary due to
e.g. the size of the frits, the way they are applied and re-heated etc.
Also the dents are rather small, defined and deep compared to some just squashed
designs on Kralik pieces. This makes me wonder if they were possibly not formed with
something like a tool, but already part of a mould these pieces were blown in.
To be honest I´m not sure if Steven´s vase in the link you provided actually deserves the
term overshot. For me it looks like it might be a different kind of technique with re-heated
crackle instead of applied frits.
