Set of 4 Vintage Pyrex Bowls

Set of 4 vintage Pyrex bowls. The blue and red bowls have fading but are in excellent condition. The green and yellow bowls are in excellent condition. None have chips or cracks. I think these may be from the 1950’s or 1960’s. Marked on bottom of each bowl. Bowls are numbers 401, 402, 403, 404.