What is a complete voyager collection?

[hibiki]

I think there is no logic in model numbering sequence. It started with 35 (number of buttons), jumped to 45, 55, 65, 70, 80. Returned to 21, 22, 25, 27, 29.
Spices follow the 30´s sequence, as Voyagers follow 10´s. There are some foreigners in these sequences (10b, 14b, 17b, 18C, 19B, 32S, 35S, 38G, 39G).
Pioneers follow a more strange sequence: 10B, 14B. 20S, 21S, 22S, 27S, 32S, 42S.
The suffix letters are worst. Some financial calculators are B (business), other are C (continuous memory), and even E (37E, 38E). The only logic is G (graphic) and S (scientific).

If I remember well (and with the calculator poster), some numbers were never used: 2, 3, 4, 5, 7, 8, 13, 24, 26, 36, 43, 44, 46, 47, 51, 52, 53, 54, 56, 57, 58, 59 (this 50´s sequence of TI calculators), 60, 62, 63, 64, 66, 68, 69, 72, 73, 74, 76, 77, 78, 79, 81, 82, 83, 84, 86, 87, 88, 89, 90, 93, 94, 96, 98, 99.

I have noted that some numbers never used, are TI models: 36, 51, 52, 53, 54, 56, 57, 58, 59, 66, 83, 84, 86, etc. Maybe an agreement to not make mess with the competitors.