SS security six with 151 prefix

BA loader

Bearcat
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Aug 24, 2025
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Indiana
I have a 4 inch SS security six with a 151 prefix, best I can tell it is rare and ruger says it was shipped in 1974, I think I know what I have but dose anyone know the value, I'm not interested in parting with it, it is a lowback model
 
You'll not likely get anyone to guess on the value of your gun for many reasons but especially without a picture or any description of condition. Does it have the box and papers? Prices can vary greatly by region. I am a Security Six newbie and have found local ads for both a stainless snub nose Security Six and a 4" stainless low back Security Six. The snub is for trade only and the low back is $700 FTF cash ... quite a bit more than I paid for a blued high back I thought I paid too much for.
 
You'll not likely get anyone to guess on the value of your gun for many reasons but especially without a picture or any description of condition. Does it have the box and papers? Prices can vary greatly by region. I am a Security Six newbie and have found local ads for both a stainless snub nose Security Six and a 4" stainless low back Security Six. The snub is for trade only and the low back is $700 FTF cash ... quite a bit more than I paid for a blued high back I thought I paid too much for.
Tks very much, no box, no papers, it is in excellent condition and ruger reps told me they shipped it in 1974, it’s a tight great shooting gun
 
Welcome to the Forum!

As noted above,, more info,, or "details" of a gun make a lot of difference in the values.
To assist you in real info,, that can help in determining the rarity of your gun would be to spend $10 & get the factory letter on it.
THEN,, once you get the details in that letter,, (Model nomenclature, & description) along with the serial number, then,, you can post info here to where those of us with a Red Eagle News Exchange Reference Guide, can look it up to determine exactly how rare it may or may not be.
The good folks at Ruger are NOT collectors or such & can be VERY wrong in describing rarity.

By the info you've provided,, you may have a scarcer variation,, it being a low back, yet a 151 prefixed gun.

In short,, get the letter, provide details,, and be very very detailed & honest on it's condition. Then an honest value can be determined.
 
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Welcome to the Forum!

As noted above,, more info,, or "details" of a gun make a lot of difference in the values.
To assist you in real info,, that can help in determining the rarity of your gun would be to spend $10 & get the factory letter on it.
THEN,, once you get the details in that letter,, (Model nomenclature, & description) along with the serial number, then,, you can post info here to where those of us with a Red Eagle News Exchange Reference Guide, can look it up to determine exactly how rare it may or may not be.
The good folks at Ruger are NOT collectors or such & can be VERY wrong in describing rarity.

By the info you've provided,, you may have a scarcer variation,, it being a low back, yet a 151 prefixed gun.

In short,, get the letter, provide details,, and be very very detailed & honest on it's condition. Then an honest value can be determined.
Tks! I have found that there were only about 2300 of this variation produced when ruger changed from high back to low back ,it is in excellent condition, I’ve been a fan of S&W revolvers for many years, just happened to luck into this one , the serial # is 151-021xx
 
Oops, I think you meant to say when Ruger transitioned from the low back to the high back (Low Back was made from 1970 to 1974, High Back from 1974 to 1988)

Any low back with a 151- serial number is a rarity. I have both low back Security Sixes with a 151- s/n and high back Security Sixes with a 150- s/n. This happened during the 1974 transition period.
 
Yes that's what I meant, what can I say, I'm old😂 tks!
Thanks to all who have shared their experiences with these firearms, I think I have a real treasure here, traded even for a used S&W 642 air weight, sounds like I got the better end of the deal, I’ve been an avid owner and shooter of firearms since I was 17, 63 now and still pulling the trigger
1756572396965.png
 
63! - You're just a young whippersnapper :D

I also think you got the better of the deal (but then again, I'm a Six series collector ;))
Ya! Like most of us, I wish I still had all of the guns that I bought traded, sold or gave away, but those are stories best told over a bottle of wine, maybe two
1756573548641.png
 
I had a nib stainless low back 151 serial number Security Six 2-1/2" that I traded even for a Bisley 454 that only had 5 rounds fired. He's a collector while I am a shooter, so we were both happy. Plus he figured out that the 454 is not kind and cuddly and he doesn't like pain.
 
I had a nib stainless low back 151 serial number Security Six 2-1/2" that I traded even for a Bisley 454 that only had 5 rounds fired. He's a collector while I am a shooter, so we were both happy. Plus he figured out that the 454 is not kind and cuddly and he doesn't like pain.
👍🤣
 
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Low back stainless Six Series are scarce

Another oddity of that gun is if it's truly the 151 prefix and low back

There was crossover though. I once had a 150-99xxx Speed that was high back
Thanks for the info, a friend at sportsman’s wharehouse verified that it is a low back model,
 
Pic of low back grip frames ….. once folks see the difference between low and high they very easy to spot / identify
 
I like the Tyler T Grips on mine too ….. even the Redhawks
 
There’s a story behind these boxes too …… hope the better educated Six Series guys will chime in on that
 
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There's a story behind these boxes too …… hope the better educated Six Series guys will chime in on that
Very nice! I also would love to here the story of the boxes, I’m looking forward to learning as much as I can about the six series, thank you
 
If you use our Search feature you’ll find dozens and dozens of Six Series threads
 
Don’t know for sure … haven’t peeled it off. But if I remember right they used Single Six boxes, maybe Blackhawk.
 
Here is what I have been able to discern about the boxes (I use this in my displays at times) Feel free to correct me if I'm incorrect about anything.

I do have to add the white cardboard boxes that LCR's are/were shipped in, I just need to get the starting/ending dates as applicable

The boxes displayed are representative of those used by Ruger when shipping their Double Action revolvers.

White box 1970 to 1974

Red/White box 1974 to 1975

Red/Black box 1975 to 1979

Yellow/Black box 1979 to 1995

Gray (plastic) box 1995 to present

Black (plastic) box 2005 to present

Black (plastic) w/red logo 2018 to present


The Brown box is a box that surrounds the box holding the firearm and is called the shipper or shipping box. These are highly sought after by Ruger firearm collectors, especially if they match the firearm serial number and the firearm box.
 
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