Any antique watch/clock experts here?

Factual Questions
1

I’ve got two pieces that might be of interest if you’re a fan or collector of older timepieces.

  1. I recently inherited a Waltham pocket watch from my father, and I’ve done the most research I could so far on it. I looked up the serial number and got this information about it:
    Model: 1894
    Material: U (Unadjusted?)
    Grade: No. 210 (Not sure about this, could use some insight here, please)
    Size: 12 (understood)
    Plate: 3/4 (understood)
    Jewels: 7 (understood)
    Bal: Breguet Spring (as I understand it, the Breguet hairspring is an excellent kind of hairspring)
    Style: OF (open faced?)

The inside of the case indicates that the case was made by the Illinois Watch Case Co., Elgin, USA and says “GUARANTEED 20 YEARS” wrapped around an oval with the word “GIANT” inside the oval. I looked this up found that the Elgin Giant was 10K Gold-Filled, guaranteed for 20 years up to March 1900. Sometime after that, they started making watch cases under the name Elgin Watch Case Co. or something like that.The case number from the Illinois Watch Case Co., which is 3620106, appears, if I’m reading the chart on the Elgin Watches site correctly, to indicate that the watch case was made around 1889. I’m not sure if that also means that the mechanism is also the same age or not.

Also, I did notice once jeweler’s mark inside the case, some numbers (9312) and something that is illegible underneath that…

If anyone has any additional information about this model of watch, especially what “No. 210” grade means, I would really appreciate it!

And finally, a photo (I can get a photo of the exposed mechanisms if that would help)

  1. I also inherited a Diehl Wall Clock that was given to my mother as a wedding gift in the early 60s. It has zodiac symbols all around the outer edge. I haven’t taken a photo of it yet, but I did find one online, though it gives me no information about the clock itself. This was the only photo I could find of this particular clock. Unfortunately it’s small and only partial. Once I get a decent digital shot of it, I’ll post it. Any clues?
2

Ha! I’m answering my own questions as I dig around… I found out what the No. 210 grade means via this link. Also, it would seem that the serial number of the movement indicates that the movement was made in 1913, while the case was made in 1889. Is it common for the movement and case to have differing dates of manufacture?