Currently working on my 1927 Woodstock 5N (N160302) on which the right ribbon shaft is frozen up.  I have removed the ribbon pedestal from the machine and the reverse trigger and the spool catch spring mechanism appear to be functioning normally.  I have been soaking the mechanism for days with several different penetrants but have not been able to free up the shaft.  The pedestal appears to be composed of two pieces (the base and spool cup) but I have also not been able to separate those.  I have noted that the pedestal base is rusted at the bottom, and if it is a two piece assembly, assume that the rust has frozen up the seam.  
Does anyone have experience with this issue?  I would appreciate any suggestions as I wanted to stay away from heating the component if at all avoidable.  I have photos if needed. 
Thank you

Just purchased an IBM Model 11C (per the manufacturers tag).  When attempting to decode the serial number for the production year at the typewriter database, appears that this is classed as just a model C but the serial number of 209795 did not seem to match the format. Noted that my machine has the ribbon spools mounted vertically, whereas the models in the database have them mounted horizontally.  I believe this to be one of the machines produced in the late 50's.  There also seems to be possibly 2 letters (DD - possibly for Department of Defense??) added before the serial number at some time.  There is a service tag affixed to the underside front that identifies this as a Model 11 with the serial number of 209795.  I would appreciate any info for clarification. 

Just picked up a 1909 Oliver No 5. (serial number 196803) and need to replace a couple of missing parts.
Need the space bar and the "tab" key  Would appreciate hearing from anyone who may have the parts or know of another source where they may be obtained.

Thank you 
Steve Clancy

You might want to consider contacting the Army purchasing department who may be able to point you in the right direction.  As per previous comments, the machine you were using could well have been made in the 50's or 60's, particularly when you consider many were purchased during the Korean War and Vietnam. 
Here is a link for the Army Purchasing Office:
http://www.farsmarterbids.com/departments/resources.php?department=ARMY&topic=PurchOff
 
New member inquiries: 
Please email us at: 
contactus@farsmarterbids.com
The contracts are also preserved at the National Archives but that would take some rootin' around.
https://aad.archives.gov/aad/free-text-search-results.jsp?s=492&cat=all&bc=sd&q=typewriter&btnSearch=Search&as_alq=&as_anq=&as_epq=&as_woq=
 
Records of Prime Contracts Awarded by the Military Services and Agencies, created, 7/1/1965 - 6/30/1975, documenting the period 7/1/1965 - 6/30/1975 - Record Group 330 (info)
Good Luck 

Since you are in California, I would contact Paul at Bremerton Office Machines https://typespec.com/.
He has been very helpful in the past (and actually has replacement drawband material) with my Royal Model 10.