I could not find any info on this seemingly high grade Bulova 10BNCHR movement; 10.5L, 23J, hack second, micro regulator, 5 positions adj plus temperature. Movement date shown 1962 production. I have a few 15J 10BNCH cal used in A17A and MIL-W-3818A Korean era military watches but have not seen this one before. Is this a railroad approved Bulova watch? If anybody has any info on the correct case reference will be much appreciated.
Posts: 39 | Location: Bdr Sunway, Selangor, Malaysia | Registered: June 08, 2005
10BNCH was their later military watch,I suspect a railroad version was to bring new life and markets for the movement. The 'R' must designate railroad. It may have been a special order for a wholesaler. 1960s was when wristwatches were finally RR approved. Apparently watch was not a big success because I can't recall any info in any of our Bulova material catalogs or service bulletins or factory communications.
Posts: 653 | Location: St Paul, Minnesota in the USA | Registered: May 04, 2004