http://www.gotheborg.com/~gothebor/marks/fukagawa.shtml
Mark is not exactly the same which is not unusual but I think yours is plate 409 !!
Yes the mark is VERY similar and the time frame listed for it would make sense.
Here is what I have figured out so far. I think they are Fukagawa. The only thing I know is that they belonged to my Great Grand Mother around the turn of the Century. (1900’s) Here is another pic of the marks. not sure if you will be able to see it better.
It is a Peony Flower from what I have gathered.
thank you I saved it and gunna read it… It helps me much for my learning I love antiques.