Amel Super Maramu 2000

Tricolor working Anchor Lights not working. I found out that the base of the tricolor and anchor light was damaged. Do you know where I can find a new base? I would prefer changing the base since I own 2 tricolor light. The base is a Legrand 55152 or 55632 On the 5 picture below, you will see the base. Then I unscrew the 2 bolt (yellow arrows) Then here is the rust

Pictures below: Additional pictures of my Mast head light and spare. First 4 pictures are the primary last picture is the back up.