I want to register my new-to-me 2110 LCG, but can't find any place that lists serial #s for them. This site only goes to 1961 (unless I am not reading it right!). TractorData says "serial numbers unknown". The plate under the hood says it's #C411070. If it uses the same numbering as the 2000s then I think it's a 1973. Any clue anyone???