Wagon wheels:
The Amish have them...but they are not made for decoration and are not cheap.
I purchased a set of 4 last year (two will go for my cannon) and I have two spare...originals from the 1800's.
They are up for grabs at 90.00 a piece. Steel rim over wood frame & spokes, original gray patina-made for farm use.
I also have a pair of iron wagon wheels that came with the original gun...LOOK like wood but are all cast steel: 140.00 for the pair...never have to worry about termites!--Always look good.-Very heavy!
The decorative ones you buy for outside gardens will NOT last more than two years around here unless they are covered & sprayed for termites.
Sorry I don't have pictures but let me see what the prices were when I went shopping last year:
This is what you find on e-bay:
http://cgi.ebay.com/TWO-WESTERN-WAGON-WHEELS_W0QQitemZ7402712657QQcategoryZ1217QQrdZ1QQcmdZViewItem
Mine are far more sturdy.
Or you could try:
http://cgi.ebay.com/36-Decorative-W...755039226QQcategoryZ20510QQrdZ1QQcmdZViewItem
(realism was not their strong point)