Very kitsch

Another "treasure" passed down to me from my mother. Very patriotic and colorful as the bi-centennial would require.
As you may see from the back it is from 1975 Spencer Gifts, and made in Japan.
Two questions from me are aroused when looking at the flags; why did not the left flag depict the first 'stars and stripes', instead of what looks like a 48 star flag and why is the depiction of the 50 star flag on the right made wrong? Like it says, 'made in Japan'.