"These pictures were actually taken at Pebble Beach, the last race they held there I believe."

(2-18-10)   From From Kare Pietilä:

"Sure looks like 0428M and I am not sure if there other flat cowl Monzas being raced in US at that time anyway. Sterling Edwards raced this car in various races in 1955 and was also present in Pebble Beach April 22, 1956, where these pictures might very well have been taken."