Texas Instruments Super Slide-Rule Calculator SR-51 Sales Brochure and Owners Manual. These 2 items don't have any writing on them and are in really good shape. The date on the Sales Brochure is 1975 and the date on the Owners manual is 1974.

My husband never threw anything away.

If there is a problem, please let me know and I will make it right.

I never haveareserve and always offer multiple ways to ship.

If you have anyquestions or want more pictures, please let me know.

I will combineshipping if you buy more than 1 item, please just let me know, so I can invoiceyou correctly.