This is a Yamaha CGS102A, a half-size ($1/2$) classical guitar designed specifically for students and young beginners. While this specific model line is still in production today, your 1994 purchase makes it an early example of this series, which Yamaha began manufacturing in Indonesia around 1990.
The CGS102A is part of Yamaha's School series, built with traditional tonewoods but scaled down for comfort.
Size: $1/2$ scale, making it approximately 33 inches in total length.
Scale Length: 21 inches (535mm), which is significantly shorter than a standard 25.6-inch full-size guitar.
Materials:
Top: Spruce (typically laminate).
Back & Sides: Meranti, a locally sourced tonewood often used in Indonesian production.
Neck: Nato (often called "Eastern Mahogany").
Fretboard & Bridge: Rosewood.
Finish: Natural Gloss body with a matte-finished neck for easier hand movement.
Your guitar was manufactured at the YMMI (Yamaha Music Manufacturing Indonesia) factory. Yamaha established this facility to maintain high quality control while producing affordable entry-level instruments. In the mid-90s, these were standard "first guitars" for school music programs due to their durability and consistent intonation compared to other budget brands.
Current Value: These guitars are highly affordable. Used models from this era typically sell for $50 to $100, while brand-new versions (the CGS102AII) retail for approximately $140–$160.
Legacy: Despite being a "student" model, many players keep them as "couch guitars" or travel instruments because of their compact size and sturdy construction.
Tip for Maintenance: Classical guitars like this use nylon strings. Since this guitar has been around since 1994, ensure you never use steel strings on it, as the higher tension can permanently damage the bridge and neck.