Help identify a mark on a porcelain shard from an archaeological dig

[Camilo63]

Hello:

I?m an archaeologist working in the city of Cartagena- Colombia. I have found an ample body of ceramics from the colonial period (XVI-XVIII) and Republican (XIX). This was accoplished during excavations at an old nobleman?s house in the walled city. Among the many ?tems that are identify as porcelain (be it chinese or tranfer printed) there is this small base of a cup with a chinese sign or mark. I?ll really appreciate any help in identifying this mark.

Camilo D?az.

[peterp]

We do not know this mark, and it is not readable. If it is a Chinese character, it is too badly written for reading, but it could also be a pictorial mark (depicting an object) in a stylized form.
This is pure guess but from the rest of this shard I would think it could be about Kangxi or Yongzheng.