Here's what I don't understand: I like the TM-1. I think it's a great sounding mic. I just don't get what, if anything about it, resembles a U47.
Other than the basket design and the round body, which sorta look U47-ish, you can't even begin to compare the sound of the K47 capsule and the K67 capsule, not to mention that this isn't a real Neumann K67 capsule. Add the absence of the VF14 tube and the BV8 transformer to the mix, and the equation has even less to do with the U47.
The B.L.U.E.-47s may have had an EF86 and a different transformer, but at least they were using the correct capsule-type. That mic sounded like a U47 should sound, with the exception of the authoritative low end and low midrange the Neumann electronics give you. But the capsule was right, and the response to the higher frequencies was spot on. The K67 is a much brighter beast, and has that weird phase shift thing that the dual backplate does, which necessitated the NFB filter in the U67. I have actually put a K67 on a U47 basket to have as an additional flavor, and you couldn't make a more radical change in the sound. Talk about bright and sibilant.
I am just getting a little tired of hearing the Peluso 2247 and TM-1, which are both fine mics that share the exact same capsule, being likened to a U47. There's nothing U47 about them! Hell, the Neumann 147 sounds more like a U47 to my ears.