Taking what we've seen on 69 Dearborn cars and applying it to 70 (since I know of no original 70 ones to use as an example ) I found offer the following
Is "Charge Reading" the voltage or the specific gravity?
Specific gravity
What would a typical "Badge" number be? Would it be stamped or written? Dearborn July 1970 car.
Stamped number in a circle identified a specific inspector. Seen black in used
Date - rotating stamp with Month and day only
Sticker - Black ink with lines that meet/touch each other
ECS's reproduction should work well for you unless your looking for a paper based sticker that will waste away after a short period
Hope this helps