When did the parkerized case get introduced?

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HandyDan
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When did the parkerized case get introduced?

#1 Post by HandyDan » Mon Oct 22, 2012 7:15 am

Hamilton's WWII military watches were first produced in a chrome plated case with what I believe were stainless steel backs. The cases tended to wear heavily while the backs are usually fine.

Image

At some point, the military switched to parkerized cases - which is a much more durable finish. 6/0 sized cases (with tap 8 crowns) were available in the late 1940's. Korean-war era watches used the same cases but with an 8/0 movement ring and tap 10 crown.

Here's a 6/0 example...

Image

Anyone know when the parkerized change was made... post WWII, end of WWII, etc?
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Re: When did the parkerized case get introduced?

#2 Post by TSTAPES23 » Mon Oct 22, 2012 7:16 pm

Good question Dan and I'm sorry I don't have a definite answer for you. I've heard the Army purchased these cases towards the end of the war since the chrome plated cases were prone to severe wear. However, I have not seen any documentation showing when these cases were first introduced so I like to err on the side of caution and treat these cases as post war.

(Here's an example of the packaging for a parkerized Hamilton case dating from 1949)

Image
Tim

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Re: When did the parkerized case get introduced?

#3 Post by timesofplenty » Tue Oct 23, 2012 5:37 am

Does the watch in the second pic have a stainless steel case?

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Re: When did the parkerized case get introduced?

#4 Post by HandyDan » Tue Oct 23, 2012 5:49 pm

Yes, that's the parkerized case... Which I think is the finish on the steel. That's the typical case finish used from then on for military watches, although the movements changed eventually to Swiss models.
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"If women don't find you handsome, they should at least find you handy" - Red Green

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Re: When did the parkerized case get introduced?

#5 Post by timesofplenty » Tue Oct 23, 2012 5:59 pm

I have a Benrus that I thought was parkerized, then did some reading and found that stainless steel can't be parkerized.
I guess the finish on these is "passivated"?

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Re: When did the parkerized case get introduced?

#6 Post by afire » Tue Oct 23, 2012 7:22 pm

Or maybe it isn't stainless to begin with.
Real men wear small watches.

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Re: When did the parkerized case get introduced?

#7 Post by timesofplenty » Tue Oct 23, 2012 7:39 pm

The case on the 2nd watch is great looking.
Any pics of it loose, w/o the strap?

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Re: When did the parkerized case get introduced?

#8 Post by HandyDan » Wed Oct 24, 2012 4:52 am

I have to confess I don't know for sure what the base metal is. I assumed it was stainless but wikipedia also says it can't be applied to non-ferrous metals (inlcuding stainless) so perhaps it's some other ferrous metal (steel). Maybe I'll see if a magnet will stick to one.

I have a similar watch where it looks like the same case but the parkerization was polished off? That's what led me to think it was stainless.

Image

It's often used on guns as a more effective coating that bluing.

I have had several of these and they all came in packages like Tim posted (with the red wrapping). The came with the case, glass crystal installed, the movement ring, dust cover, gasket and tap 8 crown. I think they were made by Star... but I can confirm that too when I do the magnet test.
-----------------------
"If women don't find you handsome, they should at least find you handy" - Red Green

http://hamiltonchronicles.com

https://www.instagram.com/hamiltonchronicles/

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Re: When did the parkerized case get introduced?

#9 Post by HandyDan » Wed Oct 24, 2012 5:28 pm

So I put a magnet up against the parkerized case and it doesn't stick. So that leads me to believe it's not a ferrous metal. I'm back in the stainless camp unless someone knows of another metal that's white, durable and non-magnetic.

Also, they're made by Star Watch Case Co.
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"If women don't find you handsome, they should at least find you handy" - Red Green

http://hamiltonchronicles.com

https://www.instagram.com/hamiltonchronicles/

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Re: When did the parkerized case get introduced?

#10 Post by timesofplenty » Wed Oct 24, 2012 5:50 pm

there's a few threads on MWR about parkerized/passivated cases.

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