---
title: "ZX81 Key-Top Symbols in 3 Colors"
id: 14801
type: "product"
slug: "zx81-key-top-symbols-in-3-colors"
url: "http://localhost/product/zx81-key-top-symbols-in-3-colors/"
markdown_url: "http://localhost/product/zx81-key-top-symbols-in-3-colors.md"
published_at: "2019-11-30T01:21:31+00:00"
modified_at: "2026-03-22T13:20:19+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2020/11/Mule-Electronics-key.jpg"
excerpt: "Vinyl stickers for standard keycaps, printed in three colors (red, blue and black)."
category:
  - name: "Keyboard"
    slug: "keyboard"
    taxonomy: "category"
    url: "http://localhost/category/hardware/keyboard/"
post_tag:
  - name: "MULE Electronics"
    slug: "mule-electronics"
    taxonomy: "post_tag"
    url: "http://localhost/tag/mule-electronics/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "Keyboard"
    slug: "keyboard"
    taxonomy: "genre"
    url: "http://localhost/type/keyboard/"
company:
  id: 11127
  title: "MULE Electronics"
  type: "company"
  url: "http://localhost/company/mule-electronics/"
price: 9.95
date: 1983
rarity: "Uncommon"
related_content:
  - id: 35586
    title: "Converting Your Sinclair Keyboard Mule Electronics"
    type: "document"
    url: "http://localhost/document/converting-your-sinclair-keyboard-mule-electronics/"
product_reviews:
  - id: 50981
    title: "Hardware Review: MULE Electronics Keyboard Overlays"
    type: "article"
    url: "http://localhost/article/hardware-review-mule-electronics-keyboard-overlays/"
adverts:
  - publication:
      - id: 26649
        title: "SYNC v3 n3"
        type: "issue"
        url: "http://localhost/issue/sync-v3-n3/"
    advert_page: "113"
  - publication:
      - id: 26650
        title: "SYNC v3 n4"
        type: "issue"
        url: "http://localhost/issue/sync-v3-n4/"
    advert_page: "117"
companies_products:
  - id: 11127
    title: "MULE Electronics"
    type: "company"
    url: "http://localhost/company/mule-electronics/"
---

# ZX81 Key-Top Symbols in 3 Colors

Vinyl stickers for standard keycaps, printed in three colors (red, blue and black).

![Image](http://localhost/wp-content/uploads/2020/11/Mule-Electronics-key-1-300x279.jpg) No Caption

![Image](http://localhost/wp-content/uploads/2020/11/Mule-Electronics-Sync_Volume_3_Number_3-209x300.jpg) No Caption