Pfennig coin from West Germany Federal Republic of Germany

This is a 10 Pfennig coin from West Germany (Federal Republic of Germany) minted in 1970.
​Item Identification & Details
​Country: West Germany (Bundesrepublik Deutschland)
​Denomination: 10 Pfennig
​Year: 1970
​Obverse (Image 11): Features an oak tree sprout being planted alongside the text "BUNDESREPUBLIK DEUTSCHLAND" (Federal Republic of Germany) and the year 1970.
​Reverse (Image 12): Displays the large numeral "10" and "PFENNIG" with wheat stalks flanking the sides. Look closely near the top center for a small mint mark letter (your coin features an "F", which indicates it was minted in Stuttgart).
​Composition: Copper-plated steel (commonly referred to as iron/steel core)
​Condition: Circulated, showing typical light surface wear and a bronze-toned patina from age.