Lot
3011 
Uruguay, Airmail, 1921-22 First Issue, overprint varieties. Included is a mint & used C1 with black overprint, mint C2 block of 4 with inverted overprint & two mint C3 with light yellow green overprint, F.-V.F., a scarce group. Scott No. C1-C3 Estimate $300 - 400.
Realized: $475