Here is a picture of my stamp:
(sorry it's a bit blurry)
The background behind the sails looks white.
Looking online for this stamp, all the pictures I can see have a colored background, eg:https://siegelauctions.com/2016/1143/3150.jpg
Is it a variant of the same stamp or a different stamp or just worn down?
I am somewhat new to stamp collecting so sorry if this is a dumb question.