noun
reference item; specimen for reference
A physical object or material kept for reference, comparison, or as a sample. Often used in business, manufacturing, or research contexts.
この参考品を元に、新しいデザインを検討します。
We will consider a new design based on this reference sample.
図書館の参考品コーナーには
Valuable materials are displayed in the library's reference items corner.
見本 is a sample or example meant to show quality or type, often for commercial display. 参考品 is more about being kept for reference rather than as a showcase.
Compound of 参考 (reference) + 品 (item, goods). The meaning is transparent from its components.