Several photographs of a prototype, transparent version of the Macintosh Classic surfaced on Twitter, with images clearly revealing the vintage model's interior components.

Twitter was ablaze on Saturday as photos of a prototype of the transparent version of the Macintosh Classic appeared on the social media platform. The images showed the vintage Mac in an entirely transparent enclosure, showing the machine's internal components during its development.

Apple fans are familiar with how the Macintosh Classic looks like. The vintage computer is popular for its classic design and the machine's gray casing. However, the images shared on Twitter by user "@DongleBookPro" is something new for those who are used to seeing the vintage machine enclosed in a hard plastic case. According to some, Apple used the prototype of the transparent Macintosh Classic that surfaced on Twitter during its development. This allowed Apple engineers to observe the internal components as the machine worked.

While some Apple fans say they seem to recall such a transparent version of the Macintosh Classic, many reveal this was the first time they saw photos of the vintage prototype. User "@DongleBookPro" posted Saturday several photos of the transparent prototype of the Macintosh Classic on Twitter. It gave Apple fans an insight into how observers study the insides of the machine as it worked, while carefully examining the layout of its internal components. The photos also show the huge CRT screen taking up most of the space at the machine's upper section, while its lower part housed most of the hardware the machine uses for its operation.

However, not all aspects of the casing of the prototype of the Macintosh Classic, photos of which appeared on Twitter, are transparent. On the front of the machine, and Apple logo in rainbow color shows in the corner, highlighting the identity of the manufacturer. There is also a stamped inscription showing the text "Made in Singapore," though it is in reverse position as it is stamped inside the transparent casing.

On the back of the transparent casing of the prototype of the Macintosh Classic, a huge sticker announces that the "unit is for development purposes only." Photos of the vintage machine, which appeared on Twitter, showed also the huge sticker stating that the machine is "not to be sold in the United States of America." These notifications indicate that the machine is a prototype model and is not available for regular users. Industry observers say such configuration is useful for examining and observing the effectiveness of the thermal management system of the machine, such as when blowing smoke through the transparent case and observing the smoke's path as moved by its internal fans.