Underwood SX Typewriters by Year then Serial Number
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1954 Underwood SX Typewriters by Serial Number

1955 Underwood SX Typewriters by Serial Number

1956 Underwood SX Typewriters by Serial Number

1957 Underwood SX Typewriters by Serial Number

1958 Underwood SX Typewriters by Serial Number

1959 Underwood SX Typewriters by Serial Number

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Underwood Typewriter Models

Underwood 1 • Underwood 12 • Underwood 140 • Underwood 150 • Underwood 18 • Underwood 19 • Underwood 198 • Underwood 2 • Underwood 20 • Underwood 21 • Underwood 22 • Underwood 255 • Underwood 256 • Underwood 3 • Underwood 310 • Underwood 314 • Underwood 315 • Underwood 319 • Underwood 320 • Underwood 330 • Underwood 378 • Underwood 4 • Underwood 4 Bank • Underwood 450 • Underwood 46 • Underwood 46 T • Underwood 478 • Underwood 5 • Underwood 6 • Underwood Ace • Underwood All-Electric • Underwood Bookkeeping Machine • Underwood Champion • Underwood Code Machine • Underwood Correspondent • Underwood Crest • Underwood De Luxe • Underwood DeLuxe Leader • Underwood Documentor • Underwood Electric 555 • Underwood Electric 565 • Underwood Electric 565 CR • Underwood F • Underwood Finger Flite Champion • Underwood Finger Flite Universal • Underwood Finger-Flite Champion • Underwood Five • Underwood Forum • Underwood Golden Touch • Underwood Hideaway • Underwood Home Mark • Underwood Jewell • Underwood Junior • Underwood Leader • Underwood Master • Underwood N 5 • Underwood No 5 • Underwood Noiseless • Underwood Noiseless 77 • Underwood Noiseless Portable • Underwood Noiseless Standard • Underwood Portable 3 Bank • Underwood Portable 4 Bank • Underwood Quiet Tab • Underwood Raphael • Underwood Rhythm Touch • Underwood Rhythm Writer • Underwood S • Underwood Scriptor • Underwood SS • Underwood Star • Underwood Student • Underwood SX • Underwood Touch Master 1 • Underwood Touchmaster Five • Underwood Touchmaster II • Underwood Typemaster • Underwood Universal • Underwood Western Union Special