That looks like it.
A Carlton Giro D'italia
on Photobucket http://i609.photobucket.com/albums/tt178/lewismtbnroad/Carlton%20Giro%20d%20italia%201966/CARLTONgiroditalia1966045.jpg
has different brazeons [Carlton style]on the top tube and owner claims it to be orange and white originally.His frame numbers are around the chainwheel side circumference of the BBShell.
I have the LH dropout numbers on mine.
I do not have the rear axle adjusters either.
Headset is different in the P/bucket one.
Frame looks like a Modified Carlton Giro D'italia with the "Victor" seat cluster......... 60's then. Number should be oin the left rear dropout and be a letter (year code) and then the number.
"Seat cluster design with it tapering in was a Carlton design and can't think of any copies."