Mexican 50 Centavos 2009 (Aluminum Bronze): Value Guide

If you inherited or found a Mexican 50 centavos coin dated 2009, here is the honest answer: in circulated condition it is worth its face value, essentially a few cents. This is a common modern coin, not a rarity. A pristine, uncirculated example can bring a few dollars from a collector, but nobody is retiring on this one.

The "50 centavos" is half of one Mexican peso. This 2009 issue is a base-metal circulating coin, made of aluminum bronze (an alloy of aluminum and copper), not silver and not gold. There is no precious metal in it, so there is no melt value to fall back on. Its worth is driven entirely by condition and collector demand, both of which are low for a coin this recent and this widely produced.

What it's actually worth in 2026

Be realistic. A modern circulating coin from 2009 that you pulled out of a jar is a face-value coin. The value only starts to move if the coin is in flawless, uncirculated condition, ideally still sealed in an original Banco de México (Banxico) mint set or blister pack.

Condition	Approximate value (USD)
Circulated (worn, from change)	Face value, a few cents
Uncirculated, loose	Under 1 USD to about 2 USD
Uncirculated in original Banxico packaging	A few dollars
Certified high grade (MS66+) or verified mint error	Can reach a small premium, rarely more

These are collector prices, not guaranteed sale prices. A coin dealer buys to resell, so an offer will be at the lower end.

Coin specifications

These are the exact figures. Use them to confirm you have the right coin and to spot fakes.

Spec	Detail
Denomination	50 centavos (half peso)
Year	2009
Composition	Aluminum bronze
Weight	4.39 grams
Diameter	22 millimeters
Edge	Plain (smooth)
Finish	Satin
Mint	Casa de Moneda de México

Obverse (front): The Mexican national coat of arms (an eagle on a cactus, devouring a serpent) with the legend "ESTADOS UNIDOS MEXICANOS" (the official name of the country, United Mexican States).

Reverse (back): The denomination design as cataloged by Banxico for this aluminum bronze 50 centavos series.

This piece belongs to the modern "Nuevos Pesos" era, the coinage system introduced after Mexico revalued its currency in 1993.

The myth to ignore

A lot of social media posts claim modern Mexican coins are secretly worth hundreds or thousands of dollars because of a "date" or a "tiny detail." For a common 2009 circulating coin, that is almost always false. Wear on the design, a discolored spot, or a nick from being in a pocket is post-mint damage, not a valuable error. It lowers value, it does not raise it.

Genuine mint errors do exist (off-center strikes, die rotation, double strikes) and a verified one can multiply the value of an otherwise ordinary coin. But most "errors" people photograph turn out to be damage or corrosion. If you think you have a real strike error, get a second opinion before you get excited.

How to check what yours is worth

1. Grade it honestly. Look at the coin under good light. Any wear, scratches, or dull surfaces means it is circulated, and circulated equals face value. See our coin grading guide to judge condition properly.
2. Confirm it's genuine. Weigh it on a jewelry scale (should be 4.39 grams) and measure the diameter with calipers (22 mm). Fakes typically miss the weight or diameter, or show flat, mushy detail. This coin has almost no counterfeit market because it isn't worth faking.
3. Keep the packaging. If it came in an original Banxico set, leave it sealed. That packaging is where the small collector premium lives.

Where to sell it

For a coin at this value level, do not overpay for shipping or grading. Options that make sense:

• A verified coin shop from the Pesoteca dealer directory, which can look at it and give you an on-the-spot value with no middleman markup.
• The Pesoteca buy-and-sell forum, where collectors trade directly. This is your best shot at getting the small collector premium rather than a dealer's buy price.

Photograph both sides and the edge before you list or sell anything. And do not dump it on the first bidder in a random online group.

Got a jar of these or a whole inherited box of Mexican coins? Post clear photos in the Pesoteca forum and let the community tell you which ones (if any) are the keepers before you sort them into the "spend it" pile.

Context of the fifty-centavos piece from the year 2009

This fifty-centavos coin (KM#549) was struck by the Mexican Mint in 2009, under the presidency of Felipe Calderon Hinojosa. It is part of the family of circulating coins in a bronze-and-aluminum-with-nickel alloy that Banxico issued between 1992 and 2009, with a 22 mm diameter and 3.10 g weight.

The year in Mexico. It is the last year of minting these denominations in bronze-aluminum. Starting in 2010 Banxico replaced them with stainless steel pieces, cheaper to produce. The country was also going through the A(H1N1) influenza health emergency, declared in April and May with the suspension of nonessential activities. That year, according to INEGI's INPC, annual inflation closed at 3.57% and the Bank of Mexico's FIX exchange rate closed the year at 13.06 pesos per dollar.

How it circulated. In 2009 these pieces circulated in a country under a health emergency and residual economic crisis. It was the last year the bronze-aluminum reached people's pockets. Starting the following year, the stainless steel pieces, lighter and with a different shine, took over.

Numismatic note. The 2009 die is the closing date of the series. Collectors seek it as a closing piece along with the 1992 as the opening piece to complete the bronze-aluminum family. The obverse design is the official Banxico National Coat of Arms and the reverse shows the face value alongside the year of minting. Between years the design remains identical and only the engraved date changes, so the visible difference is minimal. Internal die variations, when they exist, are documented in the Bank of Mexico catalog.