so we have to apologize - there is no photo of the tooth yet, because every time we try to get signal to open his mouth and show it to us he sucks his bottom lip and makes a face like a cat-butt! so we will keep working on it.
in the meantime, here is another in the "that was then, this is now" series of photos.
here is signal on his little change table, a la five days old.
and here he is on his littler change table, a la 19 weeks 2 days.
and, as a final bonus, a photo demonstrating that resemblance is not entirely based on biology.