Mid-century style Christmas sheet music collection

This item is a piano/vocal sheet music instructional book titled "120 Christmas Songs: The World's Greatest Collection." The cover features a prominent, colorful illustration of a mosaic-style angel playing a lute or similar stringed instrument against a starry blue sky and a landscape with a stylized sun. The typography and vibrant, patchwork aesthetic of the angel are stylistically consistent with graphic design from the 1960s or 1970s. The publisher's name at the bottom is printed as "Robbins Music Corporation," and there is a visible price marking of "$3.95" in the lower right corner. A partial list of titles is printed on the cover, including tracks like "Rudolph The Red-Nosed Reindeer" and "Rockin' Around The Christmas Tree." In terms of condition, the white background shows some light surface discoloration and shelf wear, particularly along the bottom edge and corners, which appears consistent with a vintage paper-based object. There is also a small pink logo or stamp reading "big3" on the lower right side. While the markings suggest era and publisher, this is an unverified physical object and should be inspected in-person to confirm age and print edition.

I have examined the digital image of the instructional book titled '120 Christmas Songs: The World's Greatest Collection.' Based on the visual evidence, the item appears to be a mass-produced softcover songbook published by the Robbins Music Corporation. The graphic design, particularly the mosaic-style angel and the 'big3' logo, suggests a production date likely falling within the late 1960s or 1970s. However, I cannot verify the specific printing or edition from a photograph alone; a physical inspection would be required to examine the binding, paper stock, and interior copyright dates. The estimated value of $15.00 to $35.00 is based on the assumption that this is a vintage printing in good, playable condition. While the cover shows some shelf wear and light discoloration consistent with a paper item of this age, the vibrant colors remain attractive for collectors of mid-century holiday ephemera. The market for vintage sheet music of this type is generally stable, with demand driven by nostalgic appeal and the inclusion of licensed hits like 'Rudolph The Red-Nosed Reindeer.' To confirm this value, one would need to verify the completeness of the pages and the absence of significant interior markings or tearing. If this item were discovered to be a modern reproduction or a later digital reprint rather than a period artifact, the market value would likely drop to a utilitarian price of $5.00 to $10.00. Authenticity of the era is typically determined by paper acidity levels and the specific ink-layering visible under magnification.