Simon Peter Gerz formed the company that bears his name in 1857, beginning actual
production of ceramic wares in 1862.
The economic upheaval brought about by World War I and its aftermath caused Gerz to cease production, for a brief period 1917/1918 and again in 1923.
But none the less the company survived for 135 years.
If you have any questions, please do contact me.
Send by 2nd class post, signed for, carefully wrapped in tissue paper and bubble wrap.