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1956 Underwood SX Serial # 11-7945353 1956 Underwood SX typewriter, Serial # 11-7945353 James Grooms's 1956 Underwood SX typewriter. 2025-03-06 From the Virtual Typewriter Collection of James Grooms: 1956 Underwood SX Serial # 11-7945353 Underwood week! Shows as an SX 50. Does anyone know what the difference between a 50 and 150 is? This was a cheapie project. A clean up and a few adjustments. It is easy to work on is about all I will give it. It shows the decline of Underwood in my opinion. It is a segment shift grafted onto a # 5 essentially. It defies fast typing and this is a pretty solid example.
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Ads. There is no contemporary ads calling the SX when they were new. There are a few ads for rebuilds showing SX100 and SX150, but I can't see a difference between the two. There were no SX50 ads to be found. The pricing is consistently less than a Super Riter or an HH.

1956 Underwood SX #11-7945353

Status: My Collection
Hunter: James Grooms (jgrooms)
Created: 12-20-2023 at 09:59AM
Last Edit: 03-06-2025 at 08:09AM

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Description:

Underwood week! Shows as an SX 50. Does anyone know what the difference between a 50 and 150 is? This was a cheapie project. A clean up and a few adjustments. It is easy to work on is about all I will give it. It shows the decline of Underwood in my opinion. It is a segment shift grafted onto a # 5 essentially. It defies fast typing and this is a pretty solid example.
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Ads. There is no contemporary ads calling the SX when they were new. There are a few ads for rebuilds showing SX100 and SX150, but I can't see a difference between the two. There were no SX50 ads to be found. The pricing is consistently less than a Super Riter or an HH.

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Clean.
Clean.








Hunter: James Grooms (jgrooms)

James Grooms's Typewriter Galleries [ My Collection ] [ My Sightings ]

Status: Typewriter Hunter
Points: 12733

As with many, the bug is back there somewhere due to an Underwood No. 5. My grandparents had a No 5. My parents had a yellow Royal Safari that I used to index card everything, including a beer can collection. Collection syndrome clue! A casual interest in typewriters started with a garage sale 3 bank simply because it said Underwood on it. Typewriters were found here and there , but I wasn't actively looking for them. The long dormant collecting tic was activated when my neighbors left a Remington Quiet Riter on the curb when they moved.

Typewriters are the perfect blend of using one's technical skills, history and functional purpose. My goal is type tested machines. My interests are not isolated to anyone area. For example, I am a big fan of Smith Corona electrics, mid century electrics and all things Royal.


RESEARCH NOTE: When researching the Underwood SX on a computer with lots of screen real estate, you may find that launching the Underwood Serial Number page and the Underwood SX By Model/Year/Serial page in new browser windows can give you interesting perspectives on changes throughout the model series.

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