ASE Reverse Proof70... What are the chances?

Hi All,
New to the board here and this is my first post so be kind!
)
I sent five of the 2006 Reverse Proof silver eagles to PCGS for grading. Came back with one PR68, two PR69 and two PR70!!!! Am I nuts or did I just hit the lottery here? Seems to me that PR70 coins should be alot scarcer than my small sample would lead one to believe?
Anyone have any insight?
Thanks... and Happy Holidays to all of you!
New to the board here and this is my first post so be kind!

I sent five of the 2006 Reverse Proof silver eagles to PCGS for grading. Came back with one PR68, two PR69 and two PR70!!!! Am I nuts or did I just hit the lottery here? Seems to me that PR70 coins should be alot scarcer than my small sample would lead one to believe?
Anyone have any insight?
Thanks... and Happy Holidays to all of you!
Successful BSTs with adriana, barrytrot, Bochiman, Dabigkahuna, Modern Coin Mart, oilstates2003, terburn88, THEGENERAL, treybenedict
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Comments
You did very very well. The 70's have lost some ground pricewise from earlier.... but are still worth a good amount.
Consider yourself as having received a very nice Christmas gift!!
I believe this happened for many reasons:
1) Pops on the 70's have gone up dramatically
2) My coin was not labeled "First Strike" (God forbid)
3) It's the holidays and people are spending cash on other things (likely to spend less on coins)
Dennis
Looking for PCGS AU58 Washington's, 32-63.