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Silver border CV - orignal?
08-24-2022, 04:05 PM
Post: #1
Silver border CV - orignal?
41CV has a silver keyboard border. It is from 1980.

Note the raised profile bevel on the F and the SHIFT keys.

Is the silver border keyboard label an early production CV possibility?

   
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09-03-2022, 06:31 AM (This post was last modified: 09-03-2022 08:28 AM by CY-CL.)
Post: #2
RE: Silver border CV - orignal?
The earliest CV know to exist, is actually 2103A10255 (corrected). This unit has the gold keyboard border and is a TallKey version.

[Image: CVTK.jpg]
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09-03-2022, 08:12 AM
Post: #3
RE: Silver border CV - orignal?
(09-03-2022 06:31 AM)CY-CL Wrote:  The earliest CV know to exist, is actually 2103A010255. This unit has the gold keyboard border and is a TallKey version.

[Image: CVTK.jpg]

Typo? 2103A010255 - 6 digits running no.?
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09-03-2022, 08:20 AM
Post: #4
RE: Silver border CV - orignal?
(09-03-2022 06:31 AM)CY-CL Wrote:  The earliest CV know to exist, is actually 2103A010255. This unit has the gold keyboard border and is a TallKey version.

See here my early 41CV :-)
This single tall gold key version seems unique.

This same machine has a gold keyboard border too and the embossed HP-41 CV logo as visible on my home page.

J-F
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09-03-2022, 08:29 AM (This post was last modified: 09-03-2022 08:33 AM by CY-CL.)
Post: #5
RE: Silver border CV - orignal?
All Calculator with A0 in the Serial are HP-41C

All Calculator with A1 in the Serial are HP-41CV (Fullnut)
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09-03-2022, 08:32 AM
Post: #6
RE: Silver border CV - orignal?
Yes the SN was a Typo

[Image: CV-SN.jpg]
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09-03-2022, 09:40 AM
Post: #7
RE: Silver border CV - orignal?
(09-03-2022 08:29 AM)CY-CL Wrote:  All Calculator with A0 in the Serial are HP-41C

All Calculator with A1 in the Serial are HP-41CV (Fullnut)

I didn’t know that. Where did you get this information from?
And for the CX fullnut is it A2?
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09-03-2022, 10:00 AM (This post was last modified: 09-03-2022 10:26 AM by CY-CL.)
Post: #8
RE: Silver border CV - orignal?
Many years of S/N research. :-)

HP-41CV

1981 : Starts with a 1, when more than 9999 units where build in one week, they starts with a 5

1982 – 1985 : Starts with a 4

1986 : Starts with a 2

HP-41CX

1983 – 1985 : All CX starts with a 4
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09-03-2022, 10:40 AM
Post: #9
RE: Silver border CV - orignal?
(09-03-2022 10:00 AM)CY-CL Wrote:  Many years of S/N research. :-)

HP-41CV

1982 – 1985 : Starts with a 4

I own 3 CVs with serial #: 2539S203**, 2541S200*, 2546S206*

Greetings,
    Massimo

-+×÷ ↔ left is right and right is wrong
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09-03-2022, 10:48 AM
Post: #10
RE: Silver border CV - orignal?
(09-03-2022 10:40 AM)Massimo Gnerucci Wrote:  
(09-03-2022 10:00 AM)CY-CL Wrote:  Many years of S/N research. :-)

HP-41CV

1982 – 1985 : Starts with a 4

I own 3 CVs with serial #: 2539S203**, 2541S200*, 2546S206*

I talk from Fullnuts only ...

In 1985 the change from Full to Halfnuts was during week 22 up to week 26.
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09-03-2022, 10:52 AM
Post: #11
RE: Silver border CV - orignal?
Interesting fact from the 1981 HP-41CV production are:

Production runs ins USA (A) from week 3 up to week 13

From week 14 all HP-41CV's where produced in Singapor (S)
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09-03-2022, 11:10 AM
Post: #12
RE: Silver border CV - orignal?
(09-03-2022 10:48 AM)CY-CL Wrote:  
(09-03-2022 10:40 AM)Massimo Gnerucci Wrote:  I own 3 CVs with serial #: 2539S203**, 2541S200*, 2546S206*

I talk from Fullnuts only ...

In 1985 the change from Full to Halfnuts was during week 22 up to week 26.

Confirmed, all those 3 are halfnuts.
Thanks.

Greetings,
    Massimo

-+×÷ ↔ left is right and right is wrong
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09-03-2022, 01:07 PM (This post was last modified: 09-03-2022 11:08 PM by rprosperi.)
Post: #13
RE: Silver border CV - orignal?
Thanks for these notes on the 41 serial numbers CY-CL!! Smile

Despite the 41 very likely being the most thoroughly documented calculator in history, I still learn lots of new stuff about it here, like these s/n notes.

Also I've seen very few of the embossed label units; does anyone know why/when/where this was used for 41 production? I was once told this was a 3rd-party after-market item that was sold, but never confirmed.

--Bob Prosperi
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09-03-2022, 03:44 PM
Post: #14
RE: Silver border CV - orignal?
(09-03-2022 10:48 AM)CY-CL Wrote:  In 1985 the change from Full to Halfnuts was during week 22 up to week 26.
So I wonder the serial 2405S40422 I found and mentioned here of a halfnut I got lately and that was bought new and never serviced (relevant part of (German) communication attached). Weird. BTW: Fully working now.
Andi


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09-03-2022, 08:28 PM
Post: #15
RE: Silver border CV - orignal?
If SN is *A0* it is a C.

If it has a silver border, then it is a C.


I recall border and chin logo being gold = CV or CX

Recently acquired the 41. Have read enough on this forum to wonder about it being a factory transition model or an HP repair mash-up.

So it started life as a C. Thanks all for the above data.

Need a spreadsheet to track the variations and have started one but it looks sparse.
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09-04-2022, 06:03 AM
Post: #16
RE: Silver border CV - orignal?
(09-03-2022 03:44 PM)AndiGer Wrote:  
(09-03-2022 10:48 AM)CY-CL Wrote:  In 1985 the change from Full to Halfnuts was during week 22 up to week 26.
So I wonder the serial 2405S40422 I found and mentioned here of a halfnut I got lately and that was bought new and never serviced (relevant part of (German) communication attached). Weird. BTW: Fully working now.
Andi

Thanks Andi

This backside is from a Full Nut. Make a little bit research and you will find out wat is wrong on this 41. Good luck.
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09-25-2022, 08:54 PM
Post: #17
RE: Silver border CV - orignal?
(09-03-2022 08:28 PM)TallKey Wrote:  If it has a silver border, then it is a C.

I recall border and chin logo being gold = CV or CX

To confirm that, here is an extract of the HP Press Release for the 7 January 1981 HP-41CV announcement, published in PPC Journal - V8N1p15-16:

Quote:The HP-41CV also features special gold trim on the outside to convey the "top-of-the-line" quality.
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