Pocket Watch Case

Antique American Waltham pocket watch. Appears to be running. The serial number is 6744171. The porcelain dial has no damage. The case is marked Columbia XS or SX, very ornate with an Elk, Star and floral design. The gold was acid tested and looks to be between 14k but Columbia cases are only supposed to be gold filled. I’ve included a picture of the test, 10k 14k 18k acid from left to right. Total weight is 45.1 grams.