1922 Cover From South Dakota To Germany

I bought this cover awhile ago and have some questions about it I am hoping someone on the forum can help with. My first question is whether this genuinely went in the post to Germany and when. The dealer I got it from indicated that the cancel is from a circa 1922 Columbia Machine Type R2. But the postmark is very faint and incomplete which makes me wonder whether it is genuine. I can see a few numbers on the stamp but nothing like a clear date. The postage appears to be correct for an overseas letter in the 1922 timeframe, but there is no other marking showing that this was received in Germany (the back is blank).

I also am wondering why a small variety store in South Dakota (Eureka Bazaar) was sending a letter to Deutsche Bank in Berlin, Germany. The address indicates that the letter is going to the "Amerika Division" of the bank, which makes sense. But I had no idea that Deutsche Bank was active in retail banking in the U.S. at that time. I know this is not a philatelic question, but I would be interested if any one had any insight on this.

Thanks.

Could you post a scan of the reverse. It might have markings indicating that it arrived in Germany.

Just looking at the front of the cover, I can think of no reason why it would not have traveled to Germany. The 5 cent rate is correct I believe.

The sender could be sending funds to a relatives account.

Unfortunately, the OP stated

1. Eureka, SD not a small town, over 1200 pop in 1920, (50% more than today) with primary income from wheat production.
2. Eureka Bazaar was not a small store for the area.
3. Significant German population.

4. State dessert came from Eureka, "kuchen" and has two basic varieties , one called "German Kuchen" which is traced back to a recipe in the "Germans from Russia" cookbook.
5. As said by mml1942, funds, in some amount, were sent home to Germany likely by registered mail; however correspondence was reasonable to send via letter.
6. UPU letter rate to Germany was 5 cents US and for a time there was a treaty rate of 2 cents when the letter traveled by German Ship to Germany.
7. No reason to doubt delivery to addressee.
8. Deutsche Bank

9. Railroad ended at soon to be Eureka SD in June 1887, less than three miles from North Dakota Border. Rail expansion north began in 1902.

Edit to add comparison to today's population.

Plenty of German immigrants in the US by then. Sure glad not to be there in the winter though.

KMB, if you want more information, especially the German population by name, you can check the US Census information for the time period. The internet is a wonderful tool to use, it is not just for asking questions, but can be used to answer them too.