We are presented with an ulcer that is new and the surrounding skin that appears to be normal.
The way I would manage this is to assume that this is Actinic Keratosis and cryotherapy with 3/12 review is appropriate
The orange jelly like fluid centrally with normal surrounding skin suggests that there has been a cyst on this ear and that it has been damaged. The way I would manage this is to wait and see if it heals over a month.
In the centre of the picture is a light brown / orange cystic lesion with blood vessels arching over the lesion. This is likely to be a small BCC. Histology - Nodular Basal Cell Carcinoma (BCC)
The pattern is skin coloured clods with looped blood vessels and white lines.
This is a typical Seborrheic Keratosis