Another HD VIN question, have not been able to decode this old set of cases........

[KNUCK]

Have these Harley engine cases with VIN L20T104XX last two numbers I have elected not to give. I bought these at Hanford meet in CA many years ago. Have looked up the numbers in the book Harley Legends and can only really tell it is a 1920. Can't tell what model info. This is a twin. Any information would be great. I paid $60.00 I think it was, any idea of $ now?

[duffeycycles]

electric lighted twin,L for generator,T for twin

[KNUCK]

Thank you for that info sir!