Lot
4246 
(Route 6006) Steamer Shamrock, straightline without ornamental frame, on blue folded part letter datelined "Sheriden (Texas) March 8th 1850" to New Orleans, red "New Orleans La. Mar 15" cds and matching "Steam 10" rating handstamp for over 300 miles, manuscript "Shamrock" endorsement, light horizontal fold, Very Fine. Milgram No. 1271 var. Estimate $500 - 750.
The "Shamrock" of 139 tons built at Newport Ky. in 1848. Burned and lost in Lake Bistineau La. in June 1851.