The flim went off to be processed and the colour slides came back.
Look at the postage!
I wondered what my Dad was doing in Portsmouth, VA, United States in 1941. He was crew on one of His Majesties "Grey Funnel Line" ships at that time. Then I noticed the address - Norfolk Navel Shipyard.
The photos were of my Mother and sister, but I suspect the true date was 1942 because my sister was clearly walking when the photos were taken. Sadly the red dye has faded, blue and green are fine but I couldn't recover the red mask to do a proper job of restoring the colours when I digitised them.