Good afternoon. As you probably already know, pam1313 is not made by factories at the moment.
Accordingly, you will have to look for compromises. What is more important to you, case material, size or blue dial.
In terms of blue dials and currently available TD models:
In 42 mm pam688 with gmt are available, but 42mm in steel, or 927, also 42mm in steel, but due.
There were problems with titanium luminors for a long time, but now there are 1117 in a 44mm titanium case, and 1663, however, its blue dial has a different finish. Also, both models come with a sandblasted case.