first pic, no biggie. Its crazing where the limbs flex, common on older bows that have been shot a lot
second pic looks like just the finish has flaked? again no biggie. You can sand and refinish easy enough. Ive done it using spray poly for a finish, or just touch it up to keep out moisture.
48" dacron string
mid 70's (guessing)
about 7 3/4 to 8 1/4 BH