Vintage 1998 addition subtraction helper, gently used

Vintage 1998 RandToy Incorporated Addition Subtraction Machine, from my Teaching days. Used in my classroom in 1990s and was great with struggling students and small groups or for tutoring. Would be a great homeschooling helper tool for skill self checking. In excellent condition and all buttons work. Non noticeable wear on sticker on front. Some marks on back, as shown. Created in China. Push the button and peek at the answer! cartoon red Wise owl graphic design.