פירוש על עבודה זרה 87:15

A talent of gold is extremely heavy, too heavy for a crown that could be worn. The amoraim here explain how to read the verse such that David would not be putting a too heavy crown on his head.
Interestingly, I listened to an interview with Queen Elizabeth this year and she did say that the crown is extremely heavy and not easy to wear. Especially, I suppose, for a 92 year old woman.