How does one determine first-day mintage of Silver Casascius coins?

[ducatitalia]

Trying to find mintage (read: funding) start dates for various Casascius silver coin issues.  Uberbills lists funding dates for all denominations, making it easy to determine first-day funding for respective denominations, but it does not delineate out when silver variations of each denomination started.  Another words, I can see that 1BTC brass coins started being funded on September 7, 2011 according to BlockExplorer, but one cannot tell when the first silver 1BTC was funded thereafter.

Short of asking Mike directly or rummaging through his Wordpress blog to try and piece together the puzzle, would anyone happen to know or know how to find out when each Casascius variation began funding...?

[naypalm]

Short of asking Mike directly or rummaging through his Wordpress blog to try and piece together the puzzle, would anyone happen to know or know how to find out when each Casascius variation began funding...?

1 BTC v1: September 2011
25 BTC v1: October 2011
1 BTC v2: November 2011
100 BTC v1: November 2011
1000 BTC v1: November 2011
10 BTC v2: December 2011
25 BTC v2: December 2011
100 BTC v2: December 2011
500 BTC v1: December 2011
Gold 1000 BTC v2: December 2011
500 BTC v2: February 2012
0.1 BTC v2: August 2012
0.5 BTC v2: April 2013