You did great! That is an early SR, 1908ish, the case is a pretty rare case with the script writing. It's pre-diamond trademark. Can't check my references now, but yeah, you did all right!
The diamond trademark 1st used /appeared in advertisement in 1909.I think the script imprint started replacing the ribbons in the case lid sometime during 1906. The Gillette diamond trademark filing claims a first use in commerce in May of 1908, but that doesn't necessarily mean that was when they started putting it into the case headliners. From the ads that I've looked through I don't recall seeing the diamond showing up in cases until 1909 in that artwork, but again, that doesn't mean it couldn't have been used earlier either.
The diamond trademark 1st used /appeared in advertisement in 1909.
The diamond trademark 1st used /appeared in advertisement in 1909.
So should I use the baking soda, aluminum foil and hot water cleaning method for this thing?