The only fakes I've seen have been from that Texas seller. The were like pack fresh. These were talking about here look old to me. I doubt they were faked back in the 70's by a kid, and if you were going to fake a Ludlow would you pick them with wear and stains? Have you seen Ludlows that proved to be fake that looked like those?
oy ve, again, if a rubber stamp was used and the ink smeared, it would leave stains....also, fake ludlows that have been around for a long time eventually wear out and can accumulate stains. Dave Gross found a fake ludlow in his collection he had since the early 1990's and he is not even sure where he got it. Maybe I am the first to tell you this but it is pretty obvious there are numerous sources of fake ludlows in our hobby. Most of the fakes seem to be resticks of series two ludlow backs with series 1 titles since series 1 brings more $$.
Getting back on on topic here, if the ludlows of this thread are from a source who had these from the 1970s, then it is merely coincidence that a random pair of titles had nearly indentical ludlow backings.