What do you consider the no. 1 item number of the 60s-70s?

Vote for your choice. 

Oye Oye is 1989. So it isn't precisely Golden Age but it still gets my vote since I've watched Tridev recently. We get the three beauties Madhuri, Sangeeta Bijlani and Sonam in one song. Plus there's this huge parade of all the villains of that era with Amrish Puri leading the parade. Bonus scenes has Sunny, Jacky Shroff and Naseeruddin Shah enacting a jailbreak. Sadly they don't make multistarrers these days. Too much fragile egos.

Oye oye is 1990s movie song tridev 

jawan e janeman is 1980s songs

So its not 60s-70s songs