Help with this tiny Dallmeyer

[Tim Meisburger]

This little lens (1.75" diameter and about 1" high) is pretty, but I'm not sure what it is or what it is for. FL is about four inches, and it looks like it might be for a washer stop (I've never had one so I'm unsure). Could it be a projector lens? Its a J.H. Dallmeyer #17056.
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[karl french]

6x5 Rectilinear Landscape lens. Originally sold to Hughes on April 7th, 1870.

[goamules]

Now that's a precise answer! Good seeing both of you.

[Tim Meisburger]

6x5 Rectilinear Landscape lens. Originally sold to Hughes on April 7th, 1870.

Wow! That would make it my oldest lens. Thank you Karl.

[Tim Meisburger]

Yes, you too Garrett. Hope all is well out in the sun!

[Tim Meisburger]

Interesting. Even with the name I cannot find any images of the lens online. Must have been uncommon. After I move I'll set it up in front of a Packard and see what it does.

[Chauncey Walden]

My little Dallmeyer is a 135mm f/16 Rectilinear 1a with wheel stops. With a serial number of 40,800 something, I believe it is quite a bit later, say 1886. It is a wonderful lens on 4x5.