What is the age of a Kimball organ Swinger 700 The entertainer II with serial?

To get an accurate age for your Kimball organ Swinger 700 The Entertainer II, you will need to check the serial number. However, since the serial number you provided is a custom serial number with letters and no numerical digits, that means it is a custom build number and not the actual serial number.

Kimball organ serial numbers typically consist of a combination of letters and digits, with the first letter indicating the year of manufacture. For example, a serial number starting with "K" would indicate a Kimball organ manufactured in 1960, "L" for 1961, and so on.

To get the exact age of your Kimball organ, I would recommend contacting Kimball directly or searching for information about the specific model you have to find the correct production year based on the serial number format used for that particular model.