Up for sale is a rare lot of 32 authentic, vintage Write-Enable stickers manufactured by the W.H. Brady Company. These are essential "New Old Stock" (NOS) accessories for the Texas Instruments SR-52 and TI-59 programmable calculators.

Product Details:

Brand: W.H. Brady Co. (Industrial Grade)

Compatibility: Designed for the SR-52 magnetic card reader, but confirmed by the collector community to work perfectly for the TI-59.

Function: These stickers cover the write-protect port on magnetic program cards, allowing the calculator to save and overwrite custom code.

Condition: Excellent vintage condition. Please note that since these are from the 1970s, the original adhesive has dried. To use them for programming today, a tiny dab of modern adhesive (like super glue) is recommended to secure them to the card.

Note: four of the stickers came off when I was separating the pack, the glue is completely dry.

Since these are vintage W.H. Brady industrial labels, they offer two major advantages over modern tape for a high-end calculator like the SR-52 or TI-59:

1. Superior Industrial Material

Unlike modern vinyl or Scotch tape, these are made from a low-friction substrate specifically engineered for high-speed mechanical readers. This material is the exact thickness required to glide under the magnetic heads without "snagging" or causing motor strain, which prevents the "Card Read Errors" common with DIY tape.

2. The "Super Glue" Advantage

Because the original 1970s adhesive is dry, you actually have more control. Modern tape adhesives are soft and can "ooze" out under the pressure of the reader’s rollers, leaving a sticky residue on the magnetic heads. By using a tiny dab of glue (like a drop of super glue), you ensure a clean, permanent bond that won’t leak or "gum up" the delicate internal components.

Provenance Note: The photos showing the W.H. Brady Co. logo were taken of the original master sheets to prove authenticity. Please note that because I am selling these in packs of 32, your specific lot may have blank backing paper or only a portion of the logo depending on where they were cut from the sheet. However, all stickers are guaranteed to be original, industrial-grade Brady 'New Old Stock' from the same authentic batch."