ATCC offers three different cell lines derived from uveal (eye) tissue for melanoma indication. Two of these cell lines are indicated by catalog numbers MP38 (ATT CRL-3298) and MP41 (ATCC CRL-3297).
But they discontinued that product. Why I have no clue!
A Chinese group developed a melanocyte cell line, UM-U-95:
https://web.expasy.org/cellosaurus/CVCL_RY60
But its not weel characterized and was only described and used in one publication.
There is also a very old report from 1980 on the U1I cell line:
https://web.expasy.org/cellosaurus/CVCL_IW88
But that looks also like a one shot!
Trying to see what happened to PIG1, I found out the group has also developed an other HPV16 immortalized melanovyte cell line: PIG3V which I will add at the next release of the Cellosaurus:
ID PIG3V
AC CVCL_VR17
RX PubMed=10937834;
CC Doubling time: 1.6 days (PubMed=10937834).
CC Transformant: NCBI_TaxID; 333760; Human papillomavirus type 16 (HPV16) [E6/E7 (pLXSN)].
DI NCIt; C26915; Vitiligo
OX NCBI_TaxID=9606; ! Homo sapiens
SX Female
AG 34Y
CA Transformed cell line
//
Maybe you should contact Isabelle C Le Poole, the first authors on the PIG cell lines: