Early 1970's (Interplast?) Italian Picnic Set

Adorable little Italian plastic picnic set. We believe made by a company called Interplast in the 1970's. four plates and four mugs in locking carrier. All in excellent used condition. No cracks, splits, or stains. Just a touch of 'rub' on the clear plastic lid. Assembled set measures 9 x 9 x 6.5 high.