Thanks Marthahill for link to Gray’s. Very helpful

https://clevelandhungarianmuseum.org/fischer-hungarian-decorative-pottery/

Here is a bit more company info !! These can be pricey as the company went out of business around 1900 !! I do not know enough to guess at value !!

There were two factories owned by different Fischers in Budapest, Hungary: [i]Emil von Fischer[/i] (later became [i]Fischer’sche Keramische Fabrik[/i]) and that of [i]ignatz Fischer[/i]. Hold in mind that Hungary was formerly part of the Austro-Hungarian Empire, thus German language was common..

In your case, the name [i]Ignatz[/i] was shortened to the initial ‘J’. The PM&M website has an explanation in its vocabulary section:
[url=https://www.porcelainmarksandmore.com/resources/vocabulary/consovowel.php]https://www.porcelainmarksandmore.com/resources/vocabulary/consovowel.php[/url]

That type link does not work here !! Post pics to this site !!