* Age: Older violins are generally more valuable than newer violins, especially if they are well-preserved. Your violin is 30 years old, which is not particularly old for a violin, but it is still a factor that could affect its value.
* Condition: The condition of the violin is also important. Look for any cracks, scratches, or other damage. A violin in good condition will be worth more than a violin that is damaged.
* Materials: The materials used to make the violin can also affect its value. Violins made from high-quality materials, such as ebony and spruce, are generally worth more than violins made from less expensive materials.
* Origin: The origin of the violin can also affect its value. Violins made in certain countries, such as Italy and France, are generally worth more than violins made in other countries.
* Maker: The maker of the violin can also affect its value. Violins made by famous makers are generally worth more than violins made by lesser-known makers.
Based on the information you have provided, it is difficult to estimate the value of your violin. However, if you are interested in getting a more accurate estimate, you should take it to a violin shop or appraiser.