I picked this scope up for not a lot of money. It looks rough on the outside and is missing the front mount, but is really nice and clear with nice fine cross hairs.

It's a Lyman 438 Field as shown in the picture with apparently a Lyman 5A rear mount.

I would like to disassemble it and re-blue the tube and end caps.  The end caps come right off.  But, I would like some advice on getting the parts out from the inside.  I assume I need to remove the 2 screws in the center of the tube which will free up the internal parts.  Can anyone verify this?   

I really don't want to damage any of these parts so thought I better ask before doing!

I could also use some advice as to where I might find a front mount and related parts.
Thanks,
Bob

Bob, Keep track of which lens goes where. They may or may not be the same focal length.
frnkeore on this forum is very knowledgeable on this type of scope.
Chuck

Yes, they are very simple scopes, made much like the Mossbergs and Wallensacks.

The front screw is the parallax adjustment and  holds a tube, that has the objective lens. the other holds the X hair cell. Be careful handling the X hair cell and don't touch the hairs unless they need cleaning and then, only with a VERY soft brush and air, no stronger than your breath.

I'm not seeing it but, there should be a "dent" in the tube, just behind the X hair screw, that holds the ocular tube in position. You'll need to make a dowel, slightly smaller than the ocular tube, with a groove to clear the dent, to push the X hair cell out.

bobw wrote on Sep 16^th, 2024 at 1:28pm:

Looking at mine, I'm not sure but, I think they may be hot blued.

I'm still not seeing that "dent", does yours have one?

I have two and both have the dent.

I think it is a 4x

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From the CMP website""In 1929, Lyman bought the Stevens Arms Co's. telescope business, one of the Stevens scopes became the Lyman 438. The 438 was first offered as a 3X, but in 1937 a 4X was made available. Both the 3X and the 4X featured Bausch & Lomb lenses and a 23.0 - foot field of view at 100 yards. Mounts were the same as the Lyman 5A until 1932, when a special four-point Lyman 438 mount was introduced with 1/2-minute click adjustments. Markings were in white enamel. In 1938, two new Lyman 438 mounts were introduced: a 1/4-minute, micrometer-click adjustable, three-point field mount with lockable field knobs. Reticules offered were the same as those for the Lyman 5A. The Lyman 438 series was discontinued in 1947.

I believe the 438 was designed to withstand recoils up to the recoil generated by a Model 1903 Springfield rifle. Remember, this scope was designed in 1911 by the Stevens Co. It is by no means a "modern scope" and is of interest, mostly, to collectors"

bobw 
   You might try calling Montana Vintage Arms to see about having one made from modern steel. I had JC make one up for my 438 about 15 years ago. I don’t remember the cost, however, it was less than $100. The original front ring on the 438 was made from either cast or sintered metal, and are usually found broken through at the screw mounting hole. 
Tom W

since it doesn't look like it has a pope rail on it, the stop ring for a MVA Winchester scope might work just fine. 
Just a thought
Sam