E. Howard 10 size 21 jewel question

[shinytickythings]

I have seen a number of these Keystone Howard 10 size, series 14, marked "21J" and with an arrow with a star in it, . . .
but a "V" underneath it, and I only count 19 jewels.
Is this a known thing, are they marked incorrectly, or are there jewels somewhere I'm not expecting?

I'm sorry that I don't have a picture of my own to accompany the post.
It's just an observation of 3 or 4 examples that are not mine.

 

[Jerry Treiman]

I have seen a number of these Keystone Howard 10 size, series 14, marked "21J" and with an arrow with a star in it, . . .
but a "V" underneath it, and I only count 19 jewels.
Is this a known thing, are they marked incorrectly, or are there jewels somewhere I'm not expecting?

I'm sorry that I don't have a picture of my own to accompany the post.
It's just an observation of 3 or 4 examples that are not mine.

The two extra jewels are jeweled banking pins.

 

[shinytickythings]

Thank you sO much, Jerry!

 

[Jerry Treiman]

Here is a photo that I believe Bill Tapp posted many years ago.

I still don't understand any mechanical advantage to this.

 

[Paul Sullivan]

Wow... first time I've heard of jeweled banking pins!