How to find original prices for discontinued pieces?

[GoStanford]

Does anybody know how to find out the original price for now discontinued Tiffany pieces? There's so much available on the secondhand market, but I would like to make sure I am getting a reasonable price.

Specifically, does anybody know the original price for this Paloma Picasso Loving Heart Pendant?

http://www.tiffany.com/Shopping/Item.aspx?sku=25104498

 

[danielnjanet]

I just found this necklace in a 2010 T&CO catalog listed at $325 for a medium medallion and $175 for a small medallion. Both seem to be on a 16 inch chain.