Home / Color Changing Coffee Mugs / Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Mug 11oz
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz Default Title 11oz - Go Mug Yourself
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
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Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Mug 11oz

Blacksmith's Shop, Quartermaster's Department, Washington, D.C., April, 1865 (U.S. Civil War) Color Changing Mug 11oz

100 in stock

$17.99 USD
$17.99 USD
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Blacksmith's Forge: A Civil War Chronicle

This color-changing coffee mug unveils a vital yet often unseen aspect of the American Civil War: the industrial support system of the Union Army. The artwork transports you to the Blacksmith's Shop, Quartermaster's Department, Washington, D.C., in April 1865, a scene brimming with historical significance.

A Moment in Time

The design faithfully recreates the bustling atmosphere of a blacksmithing workshop. Anvils, glowing forges, and the presence of men at labor are meticulously rendered, offering a window into the behind-the-scenes labor that kept the Union forces supplied and mobile during the war's final days.

Symbolism of Support

The image is a testament to the essential role of logistical and technical support in wartime. The workshop itself, a utilitarian structure, symbolizes the pragmatic efficiency required to fuel the Union's war effort. Each tool, each piece of equipment, represents the dedicated labor that often went unnoticed in the battlefield-focused narrative. The design highlights the crucial intersection of human effort and industrial capacity, demonstrating the complete logistical operation of the Union Army.

A Transforming Vision

When the mug is filled with a hot beverage, the artwork transforms, subtly revealing hidden aspects of the original image, providing an immersive visual journey into a critical but sometimes overlooked area of the Civil War. The color-changing element creates an engaging and dynamic experience, inviting the viewer to explore and appreciate the historical detail present in this impactful design.

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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.