Hello,
Your notes have the lithographed signatures of JR Beattie and JE Coyne. They were printed between 1956 and 1961. Both notes are the modified issue and not the Devil's Face..
The M/E prefix was a shorter one with 7,600,000 notes printed.
For the $20, in VG you could get $22-25 and the $5 perhaps $8-10 if you find a willing buyer.
Good luck,
Dean