Complex sentence: Standish first became involved in selling coins at the age of 17, when he set up his first table at the National Silver Dollar Show (1982) in Houston, Texas, however his passion for coins was first sparked at the age of 9.
Split into simpler sentences: Standish first became involved in selling coins at the age of 17, when he set up his first table at the National Silver Dollar Show (1982) in Houston, Texas. However, his passion for coins was first sparked at the age of 9.