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Washington Navy Yard, D.C. Samuel Arnold, A Conspirator (U.S. Civil War) Black Coffee Mug

Washington Navy Yard, D.C. Samuel Arnold, A Conspirator (U.S. Civil War) Black Coffee Mug

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Regular price $16.95 USD
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The Washington Navy Yard, located in Washington, D.C., is a significant historic military installation with connections to various events, including the U.S. Civil War. One such connection is associated with Samuel Arnold, a figure linked to a conspiracy during this period. Samuel Arnold, a sailor in the U.S. Navy, was implicated in the Washington Navy Yard Conspiracy of 1861. This plot involved a group of Confederate sympathizers, including naval personnel, who planned to seize control of the yard and disrupt the Union war effort. The conspiracy was uncovered before it could be executed, and Arnold and others were arrested and tried for treason. Arnold's trial, which took place in 1862, is noteworthy as one of the few instances during the U.S. Civil War where a member of the Union military was charged with treason. Despite his guilt being established, Arnold received leniency due to his cooperation and testimony against other conspirators. He was sentenced to prison for life but was eventually pardoned by President Andrew Johnson in 1869. The Washington Navy Yard continues to serve as an active military installation today, having played a crucial role in numerous U.S. military endeavors since its establishment in 1799. The Samuel Arnold case is an important chapter in the yard's history, illustrating the complexities and challenges faced during times of national crisis.
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Glossy black ceramic mugs in two practical sizes — 11 oz (≈330 ml) and 15 oz (≈440 ml). Comfortable C-handle, microwave- and dishwasher-safe, and manufactured to be lead- and BPA-free. Note: printed blacks may read slightly different from the mug’s base color.

These mugs are made from solid ceramic with a glossy glaze that gives a deep, even surface for printing. Sublimation printing embeds ink into the glaze so artwork sits smoothly on the mug rather than simply sitting on top — that means better resistance to fading and scratching during normal use.

They’re available in the classic 11-ounce size for everyday black coffee and tea, and a larger 15-ounce cup if you like extra room for milk, foam or a long pour. The C-shaped handle is wide enough for a secure grip and balances the mug well when full.

  • Material: 100% ceramic with a high-gloss finish for punchy, saturated results.
  • Sizes: 11 oz (≈330 ml) and 15 oz (≈440 ml) — choose your routine size.
  • Printing: sublimation process fuses color into the glaze for durable imagery.
  • Safety: lead- and BPA-free; meets common food-contact safety standards.
  • Design note: very dark artwork and the mug’s black base can produce subtle shade differences — add a thin lighter outline to ensure contrast if needed.

These mugs are at home in the kitchen, on the office desk, or tucked into a morning routine. They work for espresso shots, pour-overs, oat-milk lattes — you name it. The larger size is handy when you want a second cup’s worth without a refill.

  1. Daily use: fill with your preferred brew and sip — the mug handles hot liquids safely.
  2. Office-friendly: fits most standard mug warmers and sits securely on communal trays and kitchen counters.
  3. Gifting: packs well (wrap with a soft layer) and pairs nicely with coffee beans, tea tins, or a small box of biscuits.

Practical tip: for very dark designs, try a thin light border or a small margin so the artwork reads cleanly against the black ceramic.

These mugs are both microwave- and dishwasher-safe, but gentle habits extend the life of the print. We recommend dishwasher use on the top rack and milder cycles when possible.

Hand-washing is the friendliest option: warm water, mild dish soap, and a soft sponge. Avoid steel wool, harsh scouring pads, or blasting with extremely hot industrial cycles. And a quick reminder — don’t microwave an empty mug.

Two sizes: 11 oz (approx. 330 ml) and 15 oz (approx. 440 ml). The smaller cup is the familiar, everyday size; the larger one is for fuller pours and extra-creamy drinks.

Each mug’s mouth and height are proportioned so they’re easy to drink from and easy to clean. If you’re pairing with saucers or nesting in cabinets, expect the 15 oz to be slightly wider and taller than the 11 oz.

Size guide

All measurements are product dimensions in inches.

11 oz 15 oz
Height (in) 3.86 4.72
Diameter (in) 3.35 3.35
Diameter with handle (in) 4.72 5.12

Note: dimensions are nominal — small production tolerances may apply. If you need precise fitment (e.g., for nested storage or custom packaging), please allow a small margin.