Carter single bevel—what do I have?

[mmingio2]

Happy holidays. I lurk frequently but post rarely. I own this 180 mm single bevel Carter. If anyone has any details please let me know. Would appreciate any guess at value as I am consider trading it for a double bevel equivalent. Cheers. Matt.

 

[M1k3]

A Funayuki?

 

[adam92]

Looks like deba, for fillet fish .

 

[T85]

Man,That is a rare Carter. Well at least In last five year I never seen one in the website. Pretty sure he made few deba and single bevels