This Exactra 19 was part of the Exactra series that was manufactured by Texas Instruments though you wouldn't know it by looking at the front of the calculator. For some reasons, possibly marketing, TI decided to place their only identifying mark on the back cover in small lettering. The Exactra series included the 19, 20, 21, 22and 23 models and was produced starting in 1974. The Exactra 19 is one of the cheaper options in the series and only had 6 digit display.
The Exactra 19 uses 3 AA batteries as opposed to a 9v and has no external power supply as its more expensive brothers the 21 and 22 do. The Exactras aren't exactly rare and I've seen prices all over the place. One sold for $9.99 in good working condition while others have sold for over $100.
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| DATAMATH CALCULATOR MUSEUM Texas Instruments Exactra 22 | |
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$49.00 Time Remaining: 2d 21h 11m |
| DATAMATH CALCULATOR MUSEUM Texas Instruments Exactra 21 RARE PROTOTYPE | |
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$149.00 Time Remaining: 2d 21h 11m |
| DATAMATH CALCULATOR MUSEUM Texas Instruments Exactra 20 Star Wars Bubble lens | |
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$249.00 (1 Bid) Time Remaining: 2d 21h 9m |
| DATAMATH CALCULATOR MUSEUM Texas Instruments Exactra 21 IN THE BOX | |
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$49.00 (1 Bid) Time Remaining: 2d 21h 9m |
| Rare Texas Instruments Exactra 19 Calculator Red led bubble lens | |
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$300.00 Time Remaining: 7d 1h 54m Buy It Now for only: $300.00 |
