SL-1
Its rarity
is: B
It was used between:
6-?-27
and
6-16-41
Ink colours:
Black
Violet
Blue-green
Red
Blue
Notes:

SL-2
Its rarity
is: A
It was used between:
5-7-35
and
2-20-37
Ink colours:
Green
Blue
Violet
Red
Black
Red-violet
Notes: "CANOE" removed

SL-3
Its rarity
is: AA
It was used between:
3-22-37
and
9-20-42
Ink colours:
Red
Blue
Violet
Green
Black
Notes:

SL-4
Its rarity
is: B
It was used between:
3-8-53
and
3-12-77
Ink colours:
Green
Violet
Red
Blue-green
Notes:

SL-5
Its rarity
is: A
It was used between:
6-10-35
and
8-28-38
Ink colours:
Red
Green
Blue
Violet
Red-violet
Black
Notes:

SL-6
Its rarity
is: A
It was used between:
4-19-28
and
9-18-37
Ink colours:
Violet
Red
Blue
Black
Green
Notes:

SL-7
Its rarity
is: D
It was used between:
6-17-63
and
6-17-63
Ink colours:
Green
Notes:

SL-8
Its rarity
is: DD
It was used between:
10-21-30
and
4-16-34
Ink colours:
Violet
Notes:

SL-9
Its rarity
is: B
It was used between:
3-21-68
and
3-21-68
Ink colours:
Black
Notes:

SL-10
Its rarity
is: D
It was used between:
1-17-62
and
3-7-80
Ink colours:
Black
Blue-green
Notes:

SL-11
Its rarity
is: B
It was used between:
4-16-34
and
4-16-34
Ink colours:
Violet
Notes:

SL-12
Its rarity
is: B
It was used between:
4-16-34
and
7-9-34
Ink colours:
Violet
Notes:

SL-13
Its rarity
is: DD
It was used between:
9-18-77
and
9-18-77
Ink colours:
Black
Notes:

SL-14
Its rarity
is: B
It was used between:
10-9-82
and
10-9-82
Ink colours:
Black
Notes:

SL-15
Its rarity
is: C
It was used between:
6-15-77
and
6-15-77
Ink colours:
Blue
Notes:

SL-16
Its rarity
is: C
It was used between:
11-14-74
and
11-14-74
Ink colours:
Black
Notes:

SL-17
Its rarity
is: D
It was used between:
9-1-36
and
9-1-36
Ink colours:
Blue
Notes:

SL-19
Its rarity
is: D
It was used between:
12-16-73
and
12-16-73
Ink colours:
Black
Notes:

SL-20
Its rarity
is: D
It was used between:
12-16-73
and
12-16-73
Ink colours:
Black
Notes: