1. Model and Serial Number:
Find the model and serial number of the piano. These are typically found on the inside rim of the piano or on the frame near the tuning pins. The serial number can help date the piano and provide information about its specific features.
2. Year of Manufacture:
The serial number can be used to estimate the year of manufacture. For R. Gors and Kallmann pianos, you may be able to find a serial number lookup tool online or contact the manufacturer directly to determine the exact year.
3. Condition:
Assess the overall condition of the piano. Consider factors such as the tuning stability, action performance, cosmetic appearance, and any visible damage or signs of wear. A piano that is well-maintained and in good playing condition will be more valuable than one that needs extensive repairs.
4. Appraisals:
To get an accurate valuation of your piano, it is advisable to have it appraised by a qualified piano technician or appraiser. They will be able to assess the piano's condition, rarity, and market demand to provide a fair market value.
Without a physical examination of the piano, it is challenging to provide a specific age or value range. However, R. Gors and Kallmann pianos are known for their quality craftsmanship and may hold value depending on their age, rarity, and condition.