Forecasting & Trend analysis project of PF70 Mandela 2007 coins

    Hello, I am selling an excel file containing most of the sales data of 2007's Mandela PF70 coins for the  year 2012 (so far). The project was started beginning of this year, to obtain a "rough" trend of the coins'  value, and to use the data to do further forecasts (at a later stage). I just want to pass it on to  anyone interested in continuing with the project.  

Typical data of a sale includes: Date sold, Amount (R), BidorBuy ID, Seller name, Buy/Auction

***The reason why I stated "most of the sales data" above, is because each week (and sometimes during the week again) I added the most recent auctions/buys to my watchlist. From there on, if there was a sucessful sale, I would add it to my excel file. I'm simply stating that I didn't check every single day of the year.

  Note to self: No Shipping fees will be charged as the excel file will be sent by email