I cannot resist replying here because my experience using the "senior" Talbot bullet to see the rear from the driver side is I have no issues with visibility through thousands of miles behind the wheel all over the country. My mirror seems to have the "objects are closer than they appear" configuration which may be part of it and also it was mounted perfectly by my shop.

On a related matter also discussed in the thread, the whole door had to be redone to use the original mounting plate after removing the flag mirror that was there.