Japanese Satsuma Mark...

I picked this piece up a days ago. Based off the quality and style, I believe it may be early 19th century. The back side is only decorated with 4 small butterflies (negative space per Wikipedia which was common for early 19th century along with the clear crackle glaze). I've been searching for the mark ever since I bought it and haven't had any luck. Any help is greatly appreciated!

 

I've identified the anchor shaped mark as Zan. It will be seen on pieces by artist with Zan in their name although Zan only represents a portion of their name, like Tiazan, Kozan, Kyozan, etc, etc, etc. It turns into a large list real quick and all the Zans just listed were satsuma artist along with the many, many more.

 

Friendly Bump!

 

Another bump for good luck! Surely someone can decipher this mark. TIA

 

You might want to try this facebook group "Collecting Japanese Ceramics and Art"
https://www.facebook.com/groups/collectingjapaneseceramics/
Don