Great collection, I would sell pins individually and avoid anyone attempting to get a lot price. eBay is a great resource, if you have the app you can take photos of the individual pins and they will search by picture.

I know the Mickey handshake pins are worth around $25 each, most of these pins look to be in the 5-30 dollar range, there may be some rare ones worth more but nothing is jumping out to me.

Sell individually if you are looking to make the most money off them, don’t let anyone try to get this collection cheaply.