Without the pic, its hard to put a true value on...but..
$100 1954...devils face in F is $150, in VF $200
Modified portrait will be anywhere from $100-$125
$100 1937...if it is a VF or F aswell...then a $175
The hundreds are not as valuable in terms of how many times over face, as the lower denominations...
i.e a devils face $1 in VF-EF can bring $20, while the hundred is barely over face value...
But pictures would help to put a true value.