If you are interested in some silver history a friend and I have created a spreadsheet and posted it at Google Docs. I am using the Comex spot closing (1:30pm EDT) price as provided by CMI Gold & Silver. I had to back track to get these numbers with 2008 being the least accurate because I had to use Kitco daily London close. For the purposes of price movements and percentages it is serving it's purpose as you will see when you visit the document.
I have been sending it out to friends prior to posting it at Google Docs to get feedback. Recently one said she was going to make a physical silver purchase when price was pushing $36 as she thought she missed the $33's. I suggested she look over the spreadsheet and note the typical price movements during this time of year. She did so and saw with some patience she could possibly get another crack at the $33's. Happy to say she was able to get that today.
This is of course not and end all tool but a piece of information I hope will be of some use in your some your decisions in the silver market. It can also be helpful to share with family and friends who are not at the present buying physical silver. Be sure to note the year ending numbers. The last two years have been eye popping to say the least.
I will update it on a daily basis and if I don't for a few days it will be because I am away but will bring it up to date when I return. Any feed back will be appreciated. You can get to the spreadsheet at this link ..... COMEX SILVER SPOT CLOSES