Burnished Black Pottery Box With Design

Hi,
I'm lost on this piece - I think this would be considered a burnished pottery box 10" x 3 3/4" x 2", marked with an arrow on the lid and base.
any ideas or information appreciated.
thanks for looking.

 

I like this trunk..
It is rather narrow, I would say...shorter sides are at an angle or I am not seeing right?

 

Salesman's sample burial vault?

 

thanks Makanudo, I like it too! Must be my photo taking that make them appear at an angle - all sides are straight.
lol spring, you just never know I guess.

 

Valuables box maybe?

 

Just the thing we'd have kept our incense in in the 70s .

 

POT pot, he he ...

 

Looks a bit irregular so it may be a one-off student project. The arrows mitigate that theory however, a student probably wouldn't have the tooling to make such neat arrows. ???

 

I would think Mexico. Barro Negro.

 

I thought the same thing spring.
thanks laura, I'll see what I can find!

 

Spring, the arrows are nothing more than a snippet of clay flattened, rolled and applied - nothing difficult. The rest of the box is called "hand built" and is flat rolled out clay slabs put together - again, nothing difficult. I can see the texture of the canvas work table on the clay. To me it looks to be student art from the 1960s or 1970s. I like it. Yes I'd put my incense in it!