Speedwell registry and serial numbers

`Charles Young suggests Speedwell serial numbers read month/year/Nth bike produced that month, i.e., PR1273008 would be December 1973, 8th bike produced that month. Updated 12.28.2008`
Owner	Serial number
`Charles Young pics`	`173010`
`Ken Wallace`	`1273008`
`Stefan Schaefter of Speedbicycles`	`1174016`
`Alexander March`	`1074014`
`Carsten Rehbein pics`	`576014`
`Stefan Schaefter`	`67706`