Vintage Super ADD-A-MATIC Grocery Calculator w/cost comparer For Sale

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Vintage Super ADD-A-MATIC Grocery Calculator w/cost comparer:
$9.99

Vintage "Super Add A Matic" calculator. An aid when doing grocery shopping back in the day. Goes up to $19.99.Cost Comparer on the back side shows Price, Weight and Liquid Volume to aid in comparing item costs.Used,but still in very good working condition.