TLS rehoused
Case
7-Lens Set:
20mm | SN 20097
25mm | SN 25035
32mm | SN 32034
40mm | SN 40146
50mm | SN 50030
75mm | SN 36023
100mm | SN 100011

There is a mark on the corner front element of the 50mm but nothing that effects the imaging (see pic).