Date and signatures matter.
Book Values:
Good VG
1914 --- $3,000
1919 Francis-Easson 750. 1,500
1919 Francis-McLeod --- 3,000
1919 White-McLeod --- 1,250
Where no price is given, there is no recorded note in that grade. If one turns up, price for Good would probably be 50% of VG price.
(I'm looking for a 1914 $20 meself - anybody got one to offer?)