The introductory box and lure which came out in 1910.  The 901 number would indicate a yellow body with red and green decorations.  Note the introductory box which says "It Swims, It Swims".

The later 1911-1913 variation of the 900.  The color is white body with red and green decorations.  Note the double blue line box which preceeded or occurred at the same time as the wood box.

Side by side comparison.  The later version is slightly longer and the eyes are closer together than the more bluntnosed intro lure.