Update: All the machines have have been sold.
We are trying to find out what the English bikes are worth. Machines are:
1936 Velocette Mac 350 w/ 144 miles on it
1951 Velocette 350 with 94 miles,
1959 Triumph Tiger
Thank you for your help.
Many resources here: http://cybermotorcycle.com/valuations.htm
Please use the contact page for more information.