Tupperware Egg & Go 2 Hardboiled Egg Holder with Built in Salt Shaker 4139 rare

Hi! This is a Tupperware Egg & Go 2 Hardboiled Egg Holder with Built in Salt Shaker 4139. It is rare and hard to find. It is in good condition and has no signs of use. One of the inserts has a built in salt shaker. See pics. See pics to check it out, plus for sizing. Thank you so much for looking.