1. Gold Content: The 1947 50 pesos gold coin is made of 0.900 fine gold, meaning it contains 90% pure gold and 10% alloy. The weight of the coin is 37.5 grams, which is equivalent to approximately 1.2057 troy ounces of gold.
2. Gold Value: The current spot price of gold as of my last knowledge update in September 2021 was approximately $1,785 per troy ounce. Therefore, the pure gold content of the coin is worth around $1,785 x 1.2057 = $2,149.24.
3. Condition: The condition of the coin plays a significant role in determining its value. A well-preserved coin with minimal wear and tear, known as "uncirculated" or "mint state," will hold more value than a coin that shows signs of circulation or damage.
4. Rarity: The mintage of the 1947 50 pesos gold coin is relatively low compared to other Mexican gold coins, making it somewhat rare. However, the rarity can vary based on the specific mint mark and year.
5. Market Demand: The value of the coin is also influenced by market demand and collector interest. Historic gold coins, particularly those from Mexico, are often sought after by collectors and investors, which can drive up their value.
Given the information available, the estimated value of a 1947 50 pesos gold coin weighing 37.5 grams could be between $2,000 to $2,500. However, it's essential to consult with reputable coin dealers or experts to obtain a precise valuation, as the market conditions and prices can fluctuate.