hello everyone,
I'm looking for information about this watch. I received it in a wooden box, although I am not sure if the box belongs to the watch, as there are no markings on it.

I posted this on a dutch watch forum, where i was directed here. Some info about the watch:
It has the IWC logo on the dial plate, together with a smaller dial plate. The dials are blue.

The back has a nice pattern, with a banner/shield. I presume now that this might be to engrave initials?

After opening the first "lid" (I do not know what to call this, but the opening lids on the back of the watch), "K 14" and "93" marks are present. Furthermore, there is a squirrel mark, which I have been told is Swiss.

After opening the second "lid", the mechanism is exposed. There are a number of marks here:
-inside the lid: "metal 93" and "J.D." aswell as initials and a date "S.K. 15.11.1919" which I've been told has been added later.
-on the mechanism: A nice IWC Logo in a wave pattern, and what I presume is the serial number: "H 3616".


I was told that this might be an IWC Seeland Caliber 22, and after looking at pictures I think this is right (I am not knowledgable of watches at all). What I do not know however, is what the "H" in the serial number means.
I wonder the following:
-Is this watch a Seeland Caliber 22?
-What does the serial mean and how old is this watch?
Thank you in advance,
Wouter