I've been looking online at different serial number identification websites and finding different information. One site says that the 3,4**,*** were manufactured in 1919 and the 3,6**,*** were manufactured in 1920. Then I found an identification site that showed a rendering of the movement to be a model 6, which is said to be manufactured in 1925. So I'm a bit perplexed on what it may be. Any help would be gracious . I'm new here and trying to learn how to be a good post-er. Thanks for any advice or help you can provide.