I think I have the H 086 code figured out. Early 1850s only had 9 bolt cast iron rear wheel centers.  At serial number 169 586 they added four 3/4 inch bolts to the pattern to strengthen it. Yours would have come with the early 9 bolt centers and hubs, for 34 inch rims and tires. Your cast centers should have part number 156 109A cast into them somewhere.