With respect to the oldcardboard website, we have all subsequently learned that the Novelty Cutlery PC's were actually produced c1910 (not '07-'09).
The W600 of Collins is extremely rare with only about 3 known copies.
Here's my "rookie" card of Collins. It's not a card, but rather a cabinet of Collins c1906 during his time at Columbia University:
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http://imageevent.com/derekgranger
Working on the following:
HOF "Earliest" Collection (Ideal - Indiv): 250/346 (72.3%)
1914 T330-2 Piedmont Art Stamps......: 116/119 (97.5%)
Completed:
1911 T332 Helmar Stamps (180/180)
1923 V100 Willard's Chocolate (180/180)