This is the information that I have so far.....

1941 1L3851 1
1941 1L4131 1
1941 1L4588 1
1941 1L4798 1
1941 1L6926 1

1942 1L5979 1*
1942 1L6797 1*
1942 1L9659
1942 2L1037 1*
1942 2L1378 1*

So 1L5110 as a Mark 1* is low. What year is it, 41 or 42? As you can see there is crossed up dates, due to production methods used.