Just purchased Bracket mantel clock wih pendulum movement manufactuered by Cuckoo Clock mfg.

I found this at an estate sale. I fell in love with it. It works well and it keeps good time. The chimes are very soothing.

The history of this clock is interesting. It was manufactured by the Cuckoo Clock Mfg. Co. in New York City. It is an early edition. The mechanicals were built in Germany. I wil post a picture of the key. It is unlike any I have seen. The imprint in the back of the clocks states, "Cuckoo Clock Mfg.
made in Germany". I have seen Howard Miller clocks which look very similar to this. The name changed from Cuckoo Clock co. to Linden post World War II. I have been seaching for the date it was manufactured or the history of the piece itself. Any help would be appreciated.