Gentle shavers,

I have these two Dubl Ducks from a batch of razors I bought a couple of years ago, and questions about them. First, the pictures:

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Name: Ducks2.jpg Views: 380 Size: 101.6 KB

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The orange-scaled one is a Satin Wedge and the yellow-scaled one is a Special No. 1. Hone wear is significant; honed-out toes and broad, uneven spines. Otherwise the blades are sound, no pitting.

And my questions are...

1) can they be dated from the info on the tangs?
2) were these models originally 4/8 or 5/8 blades?
3) is the Special No. 1 honed so close to the stabilizer that I shouldn't bother with it any more?

I have no experience with Ducks. I've read here that they're very honer-friendly and shave sweetly, but are these two too far gone?