Vintage T-Shirt Forum & Community

Hi,
glad to have found this space for comparison, I find myself needing to sell a set of collectible t-shirts for a move, while I have identified the "authors" to whom they relate, I cannot define a valid quotation to try to sell them, maybe someone in this forum could help?

Thanks in advance!

BAND: Lino e i Mistoterial (IT)
YEAR:
MATERIAL:

Another very obscure one, I can't be of much help here - I can't find any other examples!