I have 2 rings one with markings on the inside 14k PAT-C

The other marking is 10k filled.
Does anyone have any suggestion??

Suggestions of what? sale? what the markings mean? other?

Based on the information provided, here are some suggestions and explanations regarding the markings on your rings:

1. 14k PAT-C: The marking "14k" indicates that the ring is made of 14 karat gold. This means that the ring is composed of 58.3% pure gold, mixed with other alloys for strength and durability. The "PAT-C" marking may refer to a patent number or copyright mark specific to the manufacturer or designer of the ring. Without more information, it is difficult to ascertain the exact meaning of the "PAT-C" marking.

2. 10k filled: The marking "10k filled" typically signifies that the ring is gold-filled. Gold-filled jewelry consists of a base metal (usually brass) coated with a thick layer of 10 karat gold. This technique creates a more affordable alternative to solid gold, as the coating is thick enough to ensure durability and longevity. Gold-filled jewelry is considered more valuable and higher in quality compared to gold-plated items.

It is important to note that without observing the rings in person or having more specific details, it can be challenging to provide a definitive analysis. If you have any further questions or concerns about the markings on your rings, it may be helpful to consult a reputable jeweler or an expert in jewelry appraisals.

Based on the information provided, it seems like you have two rings with different markings on the inside. Let me explain what these markings typically indicate:

1. "14k PAT-C": This marking suggests that the ring is likely made of 14-karat gold. "14k" refers to the gold's purity, indicating that it is 58.3% gold, with the remaining percentage being composed of other metals. "PAT-C" typically refers to the manufacturer or designer of the ring.

2. "10k filled": The marking "10k filled" suggests that the ring has a layer of gold which is 10 karats, or 41.7% gold in composition. However, the term "filled" implies that the gold layer is applied on top of another metal, rather than being solid throughout.

Please note that these explanations are general guidelines, and specific markings can vary. If you want to be more certain about the composition and authenticity of your rings, I would recommend considering the following steps:

1. Consult a professional jeweler: An experienced jeweler can examine your rings and provide accurate information regarding their composition and any other factors that may affect their value or durability.

2. Conduct an acid test: Acid testing involves applying different concentrations of acid onto a small scratch made on the ring. The reaction of the acid can indicate the gold purity. However, acid testing should only be carried out by professionals or individuals with expertise, as it can potentially damage the jewelry.

By following these steps, you'll be able to get a better understanding of the composition and value of your rings.