Based on this product's specifications, here are some alternatives and similar models
Butter knife ETERNUM Atlantis nóż do masła mono
Summary description:
Table butter knife ETERNUM Atlantis nóż do masła mono designed for spreading and serving butter. Compact single-piece design suitable for home and hospitality use. Stainless-steel construction provides durability and easy cleaning. Practical for breakfast, buffet service and food preparation where a dedicated butter knife is needed.