I have a Gustav Becker Mantle Clock with the serial number 2470309 on the movement. The GB trademark on the movement looks to be from the 1925 to 1933 era. Would anyone be able to provide a more precise year for this clock. Many thanks.
AVN, welcome to the NAWCC Message Board and thanks for posting your inquiry. The serial number on your movement indicates it was made in the January-March quarter of 1924. One other point of interest for you, is that the use of a seven-digit serial number was discontinued in mid-1925 at about 2510000 so it could not be later than that.
From your description of the logo, it appears you may be referring to a post I made in the "Post Your Gustav Becker Clocks Here" thread some years ago showing GB logos and approximate dates. If so, unfortunately the information there is quite a bit out of date although to be sure we are discussing the same thing we will need to see a good photo of the logo on your clock.
Please also post photos of the clock case, dial, and movement of your clock; that is the only way we can be certain of its identification. We will look forward to seeing the photos.