Gutta percha “Oreo” case photo of pretty girl

Hope this is the nearest relevant category for this tintype (I think) photo. It has the revenue stamp attached to the back. Wondering if this adds any rarity or value?

 

Here's a similar one ...
https://www.worthpoint.com/worthopedia/round-gutta-percha-twist-case-tintype-1798882618
Nice that the stamp is still affixed.

What is the design on the outer case?

 

In general, some collectors like revenue stamps on photographs since it dates the item to a narrow range in the 1860s. So I imagine it could add some value for some people. I have never seen a stamp on a cased image before, but I don't look for stamps. It does appear to be a tintype, from here. Is the image printed on metal? If so, that is what it is.

 

It’s a daisy or sunflower?

 

Yes, it is metal. Has some nice color tinting. Thanks Figtree.

 

Here's a match in lesser condition ...
https://www.worthpoint.com/worthopedia/antique-gutta-percha-oreo-round-2022729899

 

That’s it! Thanks.