I just found another Singer Crazy Quilt Stitches Trade Card. The front is a bit plainer than the ones with 100 stitches(or blank back), but the same basic layout with an image of the latest machine in the center spot.
This marks the first time I have seen the 150 Crazy Patch Work Stitches on a Singer tradecard. You can see that the stitches are borrowed heavily from Brainerd and Armstrong, (see 100 Crazy Stitches post) but are now lined up in rows.
There is the word 'copyrighted' on the front (lower right hand corner), but it is not dated.