**What are the primary differences between collectible militaria from World War I and World War II in terms of design, materials, and historical significance?
2. **How can collectors verify the authenticity and provenance of military artifacts, particularly uniforms and medals, to avoid purchasing reproductions or forgeries?
3. **What impact do historical events, such as battles or significant military campaigns, have on the value and collectibility of related militaria items?
4. **How have international laws and regulations, like those around deactivated weapons or national heritage protection, affected the trade and collection of militaria across different countries?
5. **What are the ethical considerations and potential controversies involved in collecting militaria, especially items related to regimes or conflicts with contentious historical legacies?
What are the legal restrictions and ethical considerations involved in collecting and trading military items, especially those related to firearms or artifacts from sensitive historical events?