Looks kinda like the rubber seal in a water globe!
http://www.nationalartcraft.com/subcategory.asp?gid=6&cid=37&scid=54

Smoke
:-)

On 9/12/07, Candace Ehringer <[log in to unmask]> wrote:
> I have several rubber? (or possibly ceramic?) disks which came from a privy or
> trash dump next to a Los Angeles school cafeteria (ca. 1890s-1910s+). Has
> anyone ever seen anything like them before? Six of them have "M & M"
> stamped on both sides and one has "HQ" stamped on both sides. They
> measure 1-1/2 inches in diameter and are 1/8 inch thick.  I would appreciate
> any help. My internet research has proved futile. Photos can be viewed at the
> link below.
>
> http://www.flickr.com/photos/10925368@N07/
>


-- 
Smoke Pfeiffer

Remember: When seconds count, the police are only minutes away!