It is therefore not unreasonable to assume that he may have signed off the 340 Cipher with a phrase something like ' I will tell you next time who the Zodiac is' , bearing in mind the positioning and appearance of the symbols on the last line.
We know that he placed what appeared to be three circled 8's on the 13 symbol cipher, but why did he circle them, was it to highlight the fact they had personal significance.
In a previous article it was shown that it was possible to generate symmetry within this cipher
So what inspired the Zodiac to use the symmetry of three 8's in the 13 symbol cipher and provide a seamless link from one cipher to another and where did he derive his three 8's from.
In the 13 symbol cipher the numbers 0311035151031103 were generated, so can we generate the same symmetry from the only apparent reference to the name ZODIAC on the final line of the 340 cipher to provide us with that seamless link. Fortunately yes, and by using the identical technique used in the symmetry-of-the-13-symbol-cipher post, by alphabetically counting the difference numerically between the letters in the cipher and the key chosen. In this case the key is the killers moniker ZODIAC, because it is without doubt the most significant marker he placed on the 340 Cipher and hard to believe they fell like this randomly on the construction of the cipher.
If we then count alphabetically, the numerical difference between the columns, ZOD produces no difference at all, ie; 000.
The answer is no, but curious all the same.
SEE ALSO zodiacciphers.com/1/post/2013/05/you-ache-to-know-my-name.html
Footnote: The three 8's also played a significant part in the dates the killer chose to commit his first three attacks and murders http://www.zodiacciphers.com/1/post/2013/01/zodiac-13-moon-calendar-crimes.html
888 is a unique number explained here in Wikipedia, it is also represents the name Jesus in christian numerology, because using the ciphered numerical system of Greek Ionic, the letters of Jesus add up to 888.
The Zodiac denoted a cross in much of his correspondence, including the 13 Hole Postcard and quite possibly in the area of the Sierra Club, discovered by Otto Fredericks in 1976, while out hitchhiking.
It is also considered lucky in China bearing a triple fortune to the beholder.