Nice set. It looks to be “Silver Ombre” from Vitreon Queen’s Lusterware Ltd. The company was founded by Sidney Sigety in Brooklyn, NY and had its heyday in the 1950s-1960s. Not so much a “collectible” but more a “useable” for those who like a bit of nostalgia. You used to be able to pick these sets up for around $30 but I’ve seen them pushed up to the $100 mark in trendy boutique shops.