How old are my razors?

I'm just curious about this. How old are my straight razors?

I have a Double Arrow... so I guess it's from the 21th century

A Dubl Duck dwarf, yellow scales. The second one on this pic:
http://straightrazorpalace.com/attac...ights-asst.jpg

And a Waterville, 5/8 with barber notch, horn scales. Waterville Hollow ground writen on the blade.
http://co102w.col102.mail.live.com/a...ABCD28679C0%7C

The waterville is a great shaver, but have seen better days. I may get that one restored.

No idea how old they are, but they are beautiful. Like those spikes, eh?

The first picture was the sale thread, where I bought the DD ;)
(Because Blackstangal's pics are better than mine)

The only 3 straight I have (yet) are the ones I mentionned.