The Heidelberg GTO 52-4-P3 (manufactured around 1999) is a “Plus” version of the GTO 52 4-colour press, offering advanced features such as perfecting capability (i.e. 2-sided printing in one pass, 2-2), plus “N&P” units (numbering & perforating), and a DDS (Direct Dampening System). It handles maximum sheet size of about 360 × 520 mm, minimum sheet size around 105 × 180 mm, and paper thickness from roughly 0.04 to 0.40 mm. Its max printing speed is ~ 8,000 sheets/hour. The machine includes rapid plate clamping, electronic double‐sheet detection, a powdering unit, and infrastructure for fine registration. Size / weight: ~ 3.86 × 1.47 × 1.55 m, ~ 4,690 kg.