What is the value of a 1890s Soren Jensen butterfly baby grand piano pre-factory made fully restored mint condition cherry wood mother pearl inlay ebony and ivory keys?

It is difficult to accurately predict the value of an antique piano without examining it in person and considering various factors such as its condition, rarity, and restoration history. However, based on general market trends and characteristics you mentioned, here's an approximate value range for your Soren Jensen butterfly baby grand piano:

Fully Restored Mint Condition: Assuming the piano has undergone a comprehensive restoration process and is in excellent condition, it could command a higher value.

Cherry Wood Mother-of-Pearl Inlay: The presence of cherry wood and mother-of-pearl inlay adds to the piano's aesthetic value and desirability among collectors.

Ebony and Ivory Keys: Ebony and ivory keys are highly sought after by collectors and can significantly enhance the piano's worth.

Pre-Factory Made: Pianos produced before the era of mass production are considered more unique and valuable compared to later factory-made instruments.

Considering these factors, the estimated value of your Soren Jensen butterfly baby grand piano in fully restored mint condition could be between $10,000 to $20,000. It's important to note that the actual value may vary depending on the specific characteristics, the reputation of the restorer, and the current market conditions.

To obtain a precise valuation, it's advisable to consult with reputable antique piano dealers or appraisers who specialize in evaluating and valuing musical instruments. They can provide a more accurate assessment based on the piano's specific condition and comparable market data.