Mushroom? Label, can anyone identify please?

I acquired this vase today, it has a label but no other marks. Unfortunately the label text is illegible, however there is a clear logo on the label that resembles a mushroom slice, (well, to me it does!). I'm sure I have seen this logo before but cannot recall where its from.

It was in a box with a mixed lot of mostly 1970s stuff, though of course this may not be.

It is very simple and attractive with a glaze that resembles polished Granite, 13 cm tall, maximum diameter 15cm, 8cm diameter rim, 7cm diameter base.

If anyone can point me in the right direction I would be much obliged.