ALCO Demonstrators, Proto-types & Test Beds | 
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Compiled by: R. Craig |
Color Image by: Ray Sabo |
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| Revised: 5 November 2020 |
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| Road No. | Model | Bldr Nmbr | Bldr Date | Notes |
| 4 | HH600 | 69126 | 9/39 | Alco Plant Switcher |
| 5 | S-1 | 69868 | 10/1942 | Alco Plant Switcher |
| 6 | DL-420 | 77991 | 8/1951 | Alco Plant Switcher; Test Bed |
| 300 | Box Cab Oil-Electric | 68848 | 1/31 | Sold to Jay Street Connecting |
| 300 | End Cab Switcher | 68593 | 7/31 | Sold to Lehigh Valley 102 |
| 304-306 | End Cab Switcher | 68603-68605 | 7/31 | Sold to US Navy #11, 3 & 4 |
| 415 | C415 | 3449-1 | 4/66 | Sold to Hammersly Iron #008 |
| 430-1, 2, & 3 | C430 | 3465 - 1 to 3 | 8/66 | Sold to SCL #1275-1277 |
| 600 (1st) | HH600 | 68539 | 7/31 | Sold to NH 0900 |
| 601 (1st) | HH600 | 68608 | 9/34 | Sold to B & M 1102 |
| 600 (2nd) | RSD-7 | 80960 | 1/1954 | Sold to ATSF as 600 |
| 601 (2nd) | RSD-7 | 81088 | 2/ 1954 | Sold to ATSF as 601 |
| 628 - 1, 2, 3, & 4 | C628 | 3376-1 to 4 | 5/64 | Sold to SP 4870-4873 |
| 636 - 1, 2 & 3 | C636 | 6008-1 to 3 | 2/68 | Sold to Morrison Knudson # 4301-4303 |
| 640 - 1 | RS27 / DL640 | 83555 | 12/59 | Rebuilt to C424 PRR #2415 |
| 640 - 2 to 5 | RS27 / DL640 | 83556-83559 | 12/59 | Sold to UP as 675-678 |
| 660 | S-1 | 3/50 | 12/59 | Sold to TCB #905 |
| 701, 701A & 701B | RS11 / DL-701 | 81456-81458 | 2/56 | Sold to SP #5720-5722 |
| 1190 | RSC-2 | 75136 | 2/47 | Sold to UP 1290 |
| 1500a and 1500c | DL-202-2 | 71257 & 71258 | 9/45 | Pre-FA, Test Bed |
| 1500b | DL-203-2 | 69974 | ? | Pre-FB, Test Bed |
| 1500 | DL-204 | 12/1945 | Sold to GM&O #700 | |
| 1501 | DL-205 | A1919 | 4/51 | Sold to GM&O #B-1 |
| 1502 | DL-204 | 12/1945 | Sold to GM&O #701 | |
| 1600 | RS-2 | 77918 | 4/1950 | 1600-hp, sold to TP&W (?) and then to ATSF #2099 |
| 1601 | RS-3 | 78252 | 11/1950 | Sold to Rutland as #200 |
| 1602A and 1602D | DL-212 | 78270 & 78271 | 11/51 | Sold to GN #278A and 279A |
| 1602B and 1602C | DL-213 | 78272 & 78273 | 11/51 | Sold to GN #278B and 279B |
| 1603A and 1603D | DL-212 | 78272 & 78273 | 11/51 | Sold to C& NW #4103A and 4104A |
| 1603B and 1603C | DL-213 | A1919 | 11/51 | Sold to C& NW #4103B and 4104B |
| 1606 | RSD-5 | 80559 | 8/52 | Sold to ATF 2157 |
| 1607 | RS-3 | 80159 | 8/52 | Sold to Interstate #37 |
| 1776 | PA-1 | 74669 | 9/47 | Locomotive for "Freedom Train" of 1947 and 1948; Sold to GM & O 292 |
| Alco 1953E | DL-500 | 6/1953 | Built at MLW; Export Model, Cab Unit; Sold to RENFE #1615 | |
| 8375A | PA-2 | 75790 | 3/50 | Locomotives for GE's "More Power to America" train; Sold to NYC 4212 |
| 8375B | PB-2 | 75789 | 3/50 | Locomotives for GE's "More Power to America" train; Sold to NYC 4304 |
| 9077 & 9078 | PA-2 | 75791 & 75792 | 12/49 | Operated as MLW demonstrators on CN; Sold to MKT 153 & 153C |
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| - | Alco DL420 Image from: John Mech Collection | |||
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Refernce sources:
Corrections / updates provided by: William MacClean and Romey Romagnoli
New: 3 February 2006
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