how did the SP mark there tools in the 1920's

[j. c.]

did the SP mark there tools with SPco or SPRR or SPRY ?the reason for asking is i have come into a bemis and call monkey wrench marked SPco  looks like its a one piece stamp and the SP had a large roundhouse here .

[DSchmitt]

This article does not answer question, but does discuss railroad markings.  http://www.railroadiana.org/info/pgMarkings.php  The tools you have are very likely Southern Pacific , but does not preclude other markings also being used at various times/places.

List of SP Standard Plan sheets 

http://espee.railfan.net/common_standards_drawings_table.html  Standard plans for Tools might answer question

 

 

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428	1200	Tools	ShovelHandles
429	1210	Tools	Shovels- Track
411	1215	Tools	BallastFork
424	1220	Tools	Pick- Tamping
422	1221	Tools	Pick- Clay
423	1222	Tools	Pick- Double Pointed
414	1230	Tools	ClawBar
421	1231	Tools	LiningBars
426	1240	Tools	RailFork
412	1244	Tools	CantHooks	26/09/1945		CDR
434	1245	Tools	TieTongs
435	1246	Tools	TimberCarrier
427	1247	Tools	RailTongs
431	1250	Tools	SpikeMauls
430	1255	Tools	Sledges
425	1260	Tools	Punches- Track
413	1265	Tools	Chisels- Track
410	1270	Tools	Adze- Track
437	1280	Tools	Wrench,Track - Single End
436	1281	Tools	Wrench,Track - Double End
417	1290	Tools	Gage- Track, for Girder Rail
415	1291	Tools	Gage- Track
416	1292	Tools	Gage- Track, Adjustable
419	1295	Tools	Level- Track (Warren)

 

 

 Suggest ask Historical Society  https://sphts.org/