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About this design
Ontario M503
Ontario M503 (Canada) (Road Sign) Black Coffee Mug
This design takes its cue from a forgotten stretch of central Ontario road, shown as the trapezoidal sign that once marked it.
Visual Elements & Composition
A deep green field fills most of the design, with a white border framing it on all sides. At the centre sits an isosceles trapezoid, wider at the base than at the top, with the numeral 503 set large and bold inside it. The layout is flat and minimalist: one shape, one number, and nothing competing for attention. The palette is limited to dark green, white and a touch of black, which keeps the sign crisp and easy to read at a glance.
Meaning & Symbolism
Ontario Highway 503 was a secondary provincial highway, first designated in 1956, that linked Kirkfield to Tory Hill through communities including Sebright, Norland, Kinmount and Gooderham. Its length before decommissioning on January 1, 1998, was about 116.8 kilometres, or 72.5 miles. The trapezoid is the standard shape for secondary routes in Ontario's provincial network, so the sign tells a driver exactly what class of road they are on. Once the province handed the route to local municipalities and counties, its sections took on local names such as Kawartha Lakes Road 6 and Haliburton Road 503. The sign now stands for a route that exists mostly in memory.
Reading the Sign in Your Hand
A mug is turned slowly between two palms, so the trapezoid and its numeral travel around the curve as you drink. The white border holds the shape together from every angle, and the bold 503 is always in view on the side you are looking at. It is a fitting companion for a morning road trip, or for anyone who still remembers the back roads that used to get them somewhere.
- Theme
- Road Sign
- Place
- Canada
- Printed
- When you order it
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.
- Daily use: fill with your preferred brew and sip — the mug handles hot liquids safely.
- Office-friendly: fits most standard mug warmers and sits securely on communal trays and kitchen counters.
- 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.