ML-1
Its rarity
is: A
It was used between:
5-?-32
and
3-25-45
Ink colours:
Violet
Black
Green
Notes:

ML-2
Its rarity
is: C
It was used between:
4-?-33
and
2-20-37
Ink colours:
Violet
Black
Red
Notes: "Canoe" removed

ML-2a
Its rarity
is: DD
It was used between:
?-?-34
and
?-?-34
Ink colours:
Not recorded
Notes: With "Canoe"

ML-3
Its rarity
is: C
It was used between:
3-22-39
and
10-2-44
Ink colours:
Black
Notes:

ML-4
Its rarity
is: AA
It was used between:
?-?-35
and
9-28-42
Ink colours:
Green
Violet
Red
Black
Blue-green
Notes:

ML-5
Its rarity
is: A
It was used between:
6-10-35
and
7-30-45
Ink colours:
Violet
Blue-green
Green
Red
Brown
Notes: No dash between Island and Tonga, Letters smaller

ML-5a
Its rarity
is: A
It was used between:
9-28-82
and
12-13-82
Ink colours:
Red
Notes: Used on TCM Centenary covers

ML-6
Its rarity
is: AA
It was used between:
1-31-36
and
7-11-46
Ink colours:
Violet
Black
Red
Notes: Rubber-stamped signature

ML-7
Its rarity
is: D
It was used between:
11-30-29
and
10-23-40
Ink colours:
Black
Notes:

ML-8
Its rarity
is: C
It was used between:
6-10-35
and
5-11-38
Ink colours:
Black
Blue-green
Red
Violet
Blue
Notes:

ML-8a
Its rarity
is: B
It was used between:
7-28-35
and
5-12-38
Ink colours:
Red-violet
Notes: "Tin Can Mail" spaced closer together

ML-9
Its rarity
is: C
It was used between:
4-25-38
and
7-11-46
Ink colours:
Red
Violet
Blue-green
Notes:

ML-9a
Its rarity
is: C
It was used between:
10-?-38
and
10-11-44
Ink colours:
Not recorded
Notes: No dash before "Mail" Commas at line ends

ML-10
Its rarity
is: D
It was used between:
3-17-37
and
12-25-38
Ink colours:
Blue-green
Red
Black
Notes:

ML-11
Its rarity
is: C
It was used between:
10-16-30
and
9-3-34
Ink colours:
Violet
Black
Green
Notes:

ML-11a
Its rarity
is: D
It was used between:
10-21-30
and
10-21-30
Ink colours:
Blue
Notes:

ML-11b
Its rarity
is: DD
It was used between:
?-?-30
and
?-?-30
Ink colours:
Black
Notes:

ML-12
Its rarity
is: D
It was used between:
7-11-46
and
7-11-46
Ink colours:
Black
Notes:

ML-13
Its rarity
is: B
It was used between:
3-22-39
and
10-11-39
Ink colours:
Black
Red
Notes:

ML-13a
Its rarity
is: DD
It was used between:
10-19-37
and
7-25-38
Ink colours:
Blue
Notes: A handmade label glued to envelope

ML-13b
Its rarity
is:
It was used between:

and
Ink colours:
Notes: The earliesr Registration markings were hand written

ML-13c
Its rarity
is:
It was used between:

and
Ink colours:
Notes: Later Registration employed gummed labels

ML-13d
Its rarity
is: D
It was used between:

and
Ink colours:
Notes: This Registration employed a rubber stamp with a hand written number

ML-13e
Its rarity
is:
It was used between:
1970s
and
Ink colours:
Notes: Later rubber stamped Registration also with penned number

ML-14
Its rarity
is: DD
It was used between:
?-?-38
and
?-?-38
Ink colours:
Not recorded
Notes:

ML-15
Its rarity
is: D
It was used between:
1-12-44
and
5-21-46
Ink colours:
Red
Notes:

ML-15a
Its rarity
is: D
It was used between:
2-19-35
and
2-19-35
Ink colours:
Red
Notes: Dash before "Mail"

ML-16
Its rarity
is: C
It was used between:
5-21-46
and
5-21-46
Ink colours:
Blue
Notes: Various other Tongan greetings

ML-17
Its rarity
is: D
It was used between:
5-6-40
and
5-6-40
Ink colours:
Black
Notes: Appearing alone without any other cachets

ML-18
Its rarity
is: D
It was used between:
5-5-40
and
5-5-40
Ink colours:
Not recorded
Notes:

ML-19
Its rarity
is: DD
It was used between:
6-15-60
and
6-15-60
Ink colours:
Black
Notes:

ML-20
Its rarity
is: DD
It was used between:
6-6-41
and
6-6-41
Ink colours:
Violet
Notes:

ML-20a
Its rarity
is: DD
It was used between:
4-21-35
and
4-21-35
Ink colours:
Violet
Notes:

ML-21
Its rarity
is: DD
It was used between:
6-?-31
and
6-9-36
Ink colours:
Not recorded
Notes:

ML-22
Its rarity
is: DD
It was used between:
6-?-31
and
6-9-36
Ink colours:
Not recorded
Notes:

ML-23
Its rarity
is:
It was used between:

and
Ink colours:
Notes: (Now listed as E-11)

ML-24
Its rarity
is:
It was used between:

and
Ink colours:
Notes: (Now listed as E-9)

ML-25
Its rarity
is: C
It was used between:
3-21-68
and
3-21-68
Ink colours:
Blue
Notes: G. Dougald Quensell's signature. (Handwritten)

ML-26
Its rarity
is: DD
It was used between:
9-25-21
and
4-16-34
Ink colours:
Blue
Notes: C.S.Ramsay, Swimming Mailman. (Handwritten signature)

ML-27
Its rarity
is: D
It was used between:
7-24-34
and
7-24-34
Ink colours:
Not recorded
Notes: Handwritten "Original", "Cover" and signature used with various rubber stamped cachets

ML-28
Its rarity
is: DD
It was used between:
7-12-71
and
7-12-71
Ink colours:
Violet
Notes:

ML-29
Its rarity
is: DD
It was used between:
12-22-33
and
12-22-33
Ink colours:
Black
Notes: Used on covers posted at Niuafo'ou by SS Mariposa 22 Dec 1933

ML-30
Its rarity
is: DD
It was used between:
?-?-82
and
?-?-82
Ink colours:
Notes:

ML-31
Its rarity
is: D
It was used between:
2-7-34
and
2-7-34
Ink colours:
Notes:

ML-32
Its rarity
is: DD
It was used between:
8-28-39
and
8-28-39
Ink colours:
Blue
Notes: Handwritten signature of Queen Salote

ML-33
Its rarity
is: D
It was used between:
5-5-73
and
5-5-73
Ink colours:
Not recorded
Notes: