Hi, thank you for your question! I have completed thousands of musical instrument appraisals and will be happy to help with yours.
Based on the serial you provided, this piano was built back in 1946. Acrosonic was a Baldwin brand that was mainly small spinet and console pianos, like yours. It was a secondary line of less expensive instruments. A spinet piano is one which is between 35-39" tall and has a drop key action. These small pianos were good for the pocketbook but lacked the sound and feel of a larger upright or a grand. Despite that, Acrosonic pianos were well known and usually sold for higher than other spinets.
Based on the maker, size, age, and used piano market, I would recommend a selling range today of approximately $400-$700 in a private sale. Best wishes!
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