Melt Prices

MX · silver · 1977–1979

Mexico 100 pesos Morelos (CIEN PESOS) melt value

One coin holds 0.64280 oz of pure silver (ASW = actual silver weight). At today’s silver price of $66.11 per troy oz, melt is $42.50.

Silver spot

$66.11 / troy oz

Spot as of Sep 6, 2026 10:45 PM · $1 move in silver changes this coin by $0.64

Gold

$4,413.60

Platinum

$1,804.00

Palladium

$1,380.00

PhotoNot on file yet — specs below are mint weight.

Melt / coin$42.50

Silver spot$66.11

ASW0.64280 oz

Gross weight27.770 g

Fineness72%

Gross troy oz0.8928

Coins / oz1.56

Figure yours

How many coins

Count the pieces. A roll of this type varies.

Pure oz 6.4280

Melt $425.00

If a buyer pays a percent of melt

Payout 70%

$297.50 at 70% of melt

Starts at 70% — a common shop bid on generic metal. Not a quote. Drag or tap a percent to sanity-check an offer.

Open stack

If you want to sell

Find a shop near you

A local coin shop can make an offer. Melt is the metal floor, not a quote. Many shops buy generic gold and silver as a percent of that number.

What this coin is

CIEN PESOS Morelos, 1977–1979, 27.77 g, .720 fine, 0.6428 oz ASW. Last large circulating silver peso before base-metal inflation coinage.

What is written on the coin

CIEN PESOS, Morelos. Search cien pesos.

Metal content (the melt spec)

Mint specification: 27.7700 grams at 72% fine, which is 0.64280 troy oz of pure silver (ASW). Formula: grams × fineness ÷ 31.1034768. Date and mintmark do not change that number. Melt today is $42.50 per coin at $66.11 silver.

Mintage

Three years, all relatively available. Often sold as junk silver.

A little history

Inflation pushed face value up; silver 100 pesos were a last circulating silver type.

How to tell you have this type

CIEN PESOS, 1977–1979, silver. Later 100 pesos are not this fineness.

Date and mintmark do not change the metal on this page. Collector value is a different market — see Sold Comps for sold prices.

Before you sell

Usually near melt

If the coin is damaged or heavily worn, melt is a fair starting number. If it looks special, check collector solds before you sell.

Melt is the metal floor. For auction and eBay solds on the same type, see Sold Comps. We list 355 melt values; collector premiums are a different market.

Quick amounts

Using $66.11 silver.

You have	Pure oz	Melt
1 coin	0.6428	$42.50
10 coins	6.4280	$424.96
20 coins	12.8560	$849.91

Silver chart

Where silver has been.

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Melt alert

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Questions people ask

How much pure silver is in a Mexico 100 pesos Morelos (CIEN PESOS)?

Mint spec is 27.770 grams at 72% fine, which is 0.64280 troy oz of pure silver (ASW). Date and mintmark do not change that.

What is a Mexico 100 pesos Morelos (CIEN PESOS) worth in melt today?

At silver spot of $66.11 per troy oz, one coin’s melt is $42.50. Multiply by how many you have. A rare date or a nice grade can sell for more than melt.

How many Mexico 100 pesos Morelos (CIEN PESOS)s equal one ounce of silver?

About 1.56 coins equal 1.00 troy oz of pure silver at mint weight.

Does mintmark change the melt value?

No. Mintmark and date do not change the metal for this composition. A Mexico City (Mo) piece and another mint of the same spec have the same melt. Collector premiums still follow date, mint, and grade.

Is melt what I should sell this Mexico 100 pesos Morelos (CIEN PESOS) for?

Most common circulated examples trade close to the metal. Better grade, proofs, and scarce dates are the exceptions. If the coin is damaged or heavily worn, melt is a fair starting number. If it looks special, check collector solds before you sell.

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