An 1870 “Diez Gramos” coin most likely refers to the 1870 Spain 10 Céntimos coin, [according to Numista] . This coin was struck under the Spanish Provisional Government and was made of bronze (95% copper, 4% tin, 1% zinc).
The value of this coin depends heavily on its condition (grade). Examples in circulated condition can be found for a few dollars, while those in pristine, uncirculated condition can fetch significantly higher prices.
For example, a circulated 1870 Spain 10 Centimos coin recently sold on eBay for $4.49. Another example is described as being in “Nice Condition” and sold for $9.99, also on eBay.
In contrast, an 1870 Spain 10 Centimos coin in XF (Extremely Fine) condition sold for $75.00 on eBay. An uncirculated (UNC) example (NGC MS65 Brown) sold for $504.00, according to Heritage Auctions. An example in XF (NGC XF Details (Cleaned)) sold for $124.00.
Therefore, the value of your 1870 diez gramos coin will likely fall within a range of a few dollars to several hundred dollars, depending on its condition. If you have a coin in exceptional condition, it may be worth more to a collector. You could consider having your coin professionally graded to determine its precise value.
How much is a 1870 coin worth?
1870 Seated Liberty Dollar Value
According to the NGC Price Guide, as of August 2025, a Seated Liberty Dollar from 1870 in circulated condition is worth between $230 and $1500. However, on the open market 1870 Silver Dollars in pristine, uncirculated condition sell for as much as $135000.
What is a centimos coin?
The céntimo (Spanish) or cêntimo (Portuguese) was a currency unit of Spain, Portugal and their former colonies. The word derived from the Latin centimus meaning “hundredth part”. The main Spanish currency, before the euro, was the peseta which was divided into 100 céntimos.