Here for your consideration is a Francis I knife in an unusual size - 7.8".It could be a luncheon knife, but an inch shorter. Or a youth knife, but a tiny bit longer!
You can use it however you like!
It is marked "Reed & Barton, Mirrorstele" as seen in the pics.
I just noticed that the back of the handle has a stylistically engraved name: "Mary Lee"
If you use the enlargement feature on the 3rd picture, you should be able to see it.
On my digital scale, it weighs 1.72 oz.