Grade/Label question ??? 0

[Lowpro]

Hi folks. 
 

NGC graded Washington quarters. Been building a 1932-1964 MS66 set. As I enjoy the Washington Quarters, I’ve accumulated other dates and grades. I have a 1947 Denver and a 1946 San Francisco. Both are Mint State “65T”. 
Going through the collection, I noticed a couple labels have a “T” designation. Can someone help me identify the meaning?

Best Regards!

[LISA B]

Hello,

The "T" is for toned which is something we haven't done for MANY years now.

Thanks,

Lisa

[Sandon]

I've also seen a "W", standing for "white", on NGC graded coins with this old label style.

[Lowpro]

Interesting. Thx for the response 😊