Hawaiian vase, maker unknown

Here is a vase I have for around 10 years and never been able to find out anything about the maker. It says "Made in Hawaii" scribbled on the bottom and has some cryptic marks beside it all under the glaze. It is 6" (15 cm) high x 3" (7 cm) at the widest. Based on the scribbles, I don't think it was mass produced. The flower is hibiscus which is native to Hawaii. This vase is pretty well done, so guessing this potter was somewhat prolific, but I have never been able to find anything similarly marked or themed. Help appreciated!

Is it signed next to the flower, on the top right?

Thanks for taking a look and for your question. That was a bit of adhesive from a price tag which was later removed.