Sarah,
 
Part of the reason I asked is that the 900+ other readers probably do not  
know the story of how Petco Park has come into existence. As well, I had hoped  
you could link the trash deposit with owners on the chain of title. And, I 
hoped  you could describe the dimensions, artifact associations, and approximate 
age of  the other items. All this information serves to assist us in helping 
you come up  with answers. 
 
How about shooting a photo of the item? One of the base feet would be  
particularly valuable.
 
Ron May
Legacy 106, Inc.