CDs have collectible value.
People often hear about various CD versions, such as silver-rimmed, Toshiba, Mitsubishi, HDCD, SACD, etc., with significant price differences. Below, we'll discuss the various CD formats and detailed identification methods.
Silver Ring Edition: The biggest difference between the silver ring edition and the regular edition lies in the inner ring of the disc. The inner ring of a silver ring CD (sometimes including the disc itself) is silver, while the inner ring of a regular CD is made of transparent plastic, hence the name "plastic ring edition." Furthermore, most albums released by Hong Kong singers before 1991 were initially released as silver ring CDs, followed by regular CDs and reissues. These are known as the "first batch silver ring editions," produced in limited quantities and appreciating in value rapidly. Silver ring CDs have not been produced since 1992!

Japanese "Sample Loan" CDs: These are extremely rare and highly sought-after promotional and preview records. The Japanese term "Sample Loan" translates to "not for sale." Their collectible value far exceeds that of officially released albums! Typically, these CDs have markings such as "Sample Loan," "Sample Product," or "Sample Loaned" printed or affixed to the back cover and inner ring to distinguish them from officially released CDs.
White Edition Discs (Promotional Records Not for Sale): White edition discs refer to promotional records specifically distributed to radio DJs and music critics for early access to new songs. These discs are typically distributed across various media before the official album release date. The term "white" refers to the fact that the disc and its cover are mostly white. Early white edition discs were mostly 12-inch vinyl records or earlier cassette tapes (also known as white tapes). Later, as vinyl records faded in Hong Kong, they were replaced by white edition CDs. It's worth noting that white edition discs often have "for promotional purposes," "not for sale," or "not for sale" printed on the cover or disc itself to prevent illegal resale. However, due to their low production volume (because they were only for promotional purposes), different covers from officially released albums, or the presence of special remixes of unreleased songs, white edition discs have collectible value.

Japanese Toshiba Edition: CDs with "TO" printed on the inner ring or surface. If this version of the CD appears on records released by Asian singers (including artists from Hong Kong and Taiwan), it is an extremely rare item with very high collectible value and a high market price!
Japanese Mitsubishi Edition: The CD has "MT" printed on the inner ring or surface. If this version of the CD appears on records released by Asian singers (including artists from Hong Kong and Taiwan), it is an extremely rare item with very high collectible value and a high market price!
Japanese Sony Edition: CDs with the word "SONY" printed on the inner ring or surface. If this version of the CD appears on records released by Asian singers (including artists from Hong Kong, Taiwan, etc.), it is an extremely rare item with very high collectible value and a high market price!
Japanese Sanyo Edition: CDs with the word "SANYO" printed on the inner ring or surface. If this version of the CD appears on records released by Asian singers (including artists from Hong Kong, Taiwan, etc.), it is an extremely rare item with very high collectible value and a high market price!