Stampe SV4C. This is an air to air shot of me fly­ing my beau­ti­ful antique Stampe SV4C open cock­pit antique bi-plane over Sono­ma Coun­ty, Cal­i­for­nia. N num­ber. 111SV It was an amaz­ing aer­o­bat­ic aircraft…and flew like a dream.