I give up, I can't find the answer anywhere.

So many dealer highlight their coins with great description, mintage, and how many are known to exit today. Sometimes they end their description with " and it's housed in an old green holder." This is what I can not find the answer to:

When did the green holder start?

When was is discontinued?

With this knowledge a collector would know approximately how long the coin they are intersted in went untouched.

So I give up, I can't find the answer. HELP!