What is the value of a 1928 five dollar bill without In God We Trust?

The motto was not added to bills until the late 1950s and early 1960s so an older bill without the motto is normal and not a printing error.

There are 12 different varieties of $5 bill from 1928 so you need to know the seal color and whether there's a small letter next to the date. Values as of 02/2009:

Red Seal:

No letter or A to E - $6.-$10

F - $8.-$13.

Green Seal:

No letter or A - $8.-$35

B - $8.-$20.

C - $200.-$650.

D - $400.-$1000.