d_visibility
Last change: 2022.10
CODE | DESCRIPTION | FROM_YEAR | TO_YEAR |
---|---|---|---|
-99 | UNKNOWN | 1984 | 2006 |
1 | Whole crown is visible | 1984 | |
2 | Crown only partially visible | 1984 | |
3 | Crown only visible with backlighting (i.e. in outline) | 1984 | |
4 | Crown not visible | 1984 |