Eclipse Cycle of 112 Years

I have an artifact from the Middle East whose markings confirm the existence of a 112-year eclipse cycle. I believe that it may date to a time earlier than the discovery of the Saros cycle. I have been unable to locate any reference to such a cycle other than my own writings on the subject. The cycle is easily confirmed on the NASA eclipse site. The eclipse-cycle information is encoded using non-verbal and non-numeric symbols.
Other information shows the length of a Venus synodic period, measured in day. Does anyone have information on such a measurement that uses weeks?
I can provide a PowerPoint file via e-mail about the above data, plus more. Please send your request to me at chostett@verizon.net Clyde Hostetter