I would suggest one thing about pre-war, post-war property. Not all post-war property is free of lead paint. I'm sure I'll be corrected and I welcome it. Pre-war is a designation for any building built prior to 1947. After that, everything is considered post-war. The use of lead paint was halted in 1978. So those 31 years between the two could result in some or many rentals having some lead paint somewhere.
One minor correction, with respect. "I am the owner I rented it myself but an agent was representing the tenant." you didn't rent your apartment by yourself . An agent brought in a prospective tenant that had good income, assets and credit along with the disclosure form and most likely the lease form. That information and documents were likely provided by the agent in question.
Do you know of any lead paint in the apartment? Initial the portion that pertains to you.
If this is a new lease, call me at 917-968-5912.