Thread: Identifying some water hones.

Hello everyone!
Most of the times when looking about information about old hone I managed without need to ask around, but with those two I got stumped.
I would like to ask if anyone recognizes or knows something about these two.

First stone with generic label in English and imperial size of 3/8'', sadly logo is destoryed.

Second stone with generic label in German, googling the company yelded no results. I have a list of some old German companies with logo and company name abbreviations but it does not inlcude any called P&S. What is more problematic is the "Wassersteine", most of the time the noun used for a hone is Abziehstein or Schleifstein. Wasserstein seems to more of an aquarium stone, at least based on my recent googling.

Should anyone know something about those stones, please comment.
Thanks in advance.

Best regards