When sourcing wholesale antique lamps, you must prioritize electrical safety and material authenticity. Key specifications include the socket type (E26/E27), voltage compatibility (110V-240V), and the quality of the finish (e.g., electroplated brass vs. spray-painted iron). Ensure the lamps use UL-listed or CE-certified internal wiring to prevent fire hazards. For the 'antique' look, verify if the glass is hand-blown or machine-pressed, as this significantly impacts the retail price point and perceived value.