5513 Serif versus Non-Serif?

[mitchie41]

Hey Guys:

I have a vintage Matte Dial 5513 (Serial Number is 3.5M)

I was just doing some research on the 5513 Matte Dial Website: http://www.5513mattedial.com/Serifs.html

According to this resource, my watch should be a "serif dial" by serial number.

But when I look at the dial under a loupe, I notice that the middle stroke in the "E" in "ROLEX" has serif at the end which is what you see in an earlier "non-serif" dial.

Under UV light, the markers glow green evenly, but once the light source is removed, I can see a very faint glow from the markers that last a few minutes in pitch darkness.

Is the dial original?
Is the response to UV Light something that is expected? I have other vintage watches and I find that the lume glows evenly under UV, but the glow fades immediately once the UV light source is removed.