Your pedal car could be from as late as 1927. Here's an advertisement showing your \\\"mack\\\" pedal car for sale by Butler Brothers in 1927:
I love the original price tag of $21 dollars. Considering the average wage in 1927 was 50 cents a day, I think its safe to say this pedal car originally belonged to a wealthy family!
Your 1927 American National \\\"Mack\\\" pedal car is worth around $1200-1500 dollars. Here's one currently for sale in that price range:
1920s Steelcraft Dump Truck Pedal Car for sale $1200 plus shipping