Based on this product's specifications, here are some alternatives and similar models
Watercolor Block CANSON Montval DIN A3 300 g/m² 12 Sheets Fine Surface Spiral Bound Microperforated
Summary description:
CANSON Montval watercolor block in DIN A3 format with 300 g/m² fine-surfaced paper includes 12 sheets. The pads are spiral-bound and microperforated for easy sheet removal, designed for wet media such as watercolor and gouache. Suitable for studio work, sketches, studies and layered washes, offering reliable surface texture and absorption.