Yes e7. All these years I never knew they were date stamped, never even paid attention or noticed so thank you. That means the articles and websites that said they were made the first year 1963 are totally wrong.
I was under the impression that the mini twinn was equipped with 36 spoke rims but apparently not.
The mini twinn introduced in 68 was available with the blue band kick back having 28 spoke wheels.
The assembled blue band hubs were offered in both 28 & 36 hole for .080 gauge spokes.
But you could buy four different hub shells.
AB-1) 36 hole .080 gauge
AB-1B) 28 hole .080 gauge
AB-1C) 36 hole .120 gauge
AB-1D) 36 hole .105 gauge
Also, you can swap out three parts and some blue paint to convert a yellow band to overdrive blue band. (I know there are a few of those out there, .. over 60 years anything is possible)
Its also my understanding the blue band was offered on the stingray models with the smaller lucky 7 chainring. But over 60 years wheels/hubs could have been swapped so any combination can be found.
Just wondering, what info have you found stating they were out in 63?
Hope I didn't carp on your thread, GLWS.