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Gen'l. John W. Geary and Staff - Taken at Harper's Ferry (U.S. Civil War) Color Changing Coffee Mug 11oz

Gen'l. John W. Geary and Staff - Taken at Harper's Ferry (U.S. Civil War) Color Changing Coffee Mug 11oz

100 in stock

Regular price $19.99 USD
Regular price Sale price $19.99 USD
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The "Gen'l. John W. Geary and Staff - Taken at Harper's Ferry (U.S. Civil War) Color Changing Coffee Mug 11oz" is a unique piece of drinkware that commemorates a significant event in American history. This mug showcases an illustration inspired by the famous photograph of Union General John W. Geary and his staff, taken during the U.S. Civil War at Harper's Ferry. The design is intricately detailed, capturing the essence of the 19th-century military uniforms and the seriousness of the historical moment. This mug offers a glimpse into the past while serving your daily beverage. Ideal for history enthusiasts, collectors, or anyone who appreciates unique and cool drinkware.

The color-changing feature adds an interactive element to this coffee mug. As hot liquid is poured into it, the image subtly changes from a sepia tone to vivid colors, mimicking the progression of time during the Civil War era. This feature serves as a subtle reminder of the passage of time and the dramatic events that took place in our nation's history. Whether used daily or displayed as a collectible, this mug is a thoughtful addition to any home or office.

Perfect for anyone who appreciates unique and cool drinkware, particularly those with an interest in American history or the U.S. Civil War.

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Color-changing ceramic mugs with a glossy finish, black exterior, and white interior. Available in one size: 11 oz (≈330 ml). Heat-reactive coating reveals your custom design when filled with hot liquid. BPA- and lead-free, with a comfortable C-handle.

This mug brings a playful twist to the daily coffee or tea ritual. At room temperature, it looks like a simple black mug with a glossy finish. But add a hot beverage, and your chosen design fades into view, showing vivid colors against the white interior.

The ceramic body is durable enough for repeated use, while the C-shaped handle balances comfort and grip. Printing uses sublimation techniques that fuse color into the heat-reactive surface for crisp results when the design appears.

  • Material: ceramic with glossy black exterior and white interior.
  • Size: one standard size, 11 oz (≈330 ml).
  • Finish: glossy glaze with heat-sensitive surface.
  • Printing: sublimation process produces crisp, vibrant colors.
  • Safety: BPA-free and lead-free, suitable for everyday drinks.
  • Effect: design is faintly visible when cold, fully revealed when hot.

Perfect as a novelty gift or a fun personal mug, the heat-reactive design makes coffee breaks more engaging. It works well for morning coffee, afternoon tea, or hot chocolate.

  1. Daily routine: fill with any hot beverage to reveal your chosen artwork.
  2. Gifting: the “magic” reveal makes it a memorable present for birthdays, holidays, or office exchanges.
  3. Office use: sparks conversation while still being practical for everyday drinks.

Note: for best results, avoid designs that rely heavily on deep black backgrounds, as they may blend with the mug’s surface when cold.

Unlike standard mugs, color-changing mugs require gentler care to preserve the heat-reactive coating. Hand-wash only — avoid the dishwasher and abrasive scrubbers, which can damage the finish and reduce the effect.

The mug is safe for short microwave use when heating liquids, but repeated high-heat cycles may shorten the lifespan of the coating. Always allow the mug to cool before washing.

Available in one classic size: 11 oz (approximately 330 ml). It’s large enough for most standard coffee makers and fits comfortably in most cabinets.

Size guide

All measurements are product dimensions in inches.

11 oz
Height (in) 3.78
Diameter (in) 3.23
Diameter w/ handle (in) 4.76

Note: measurements are approximate; slight variations may occur due to manufacturing tolerances.