I did a quick web search for that part number and it comes up as 46-53. They may be exactly the same for the 60-61 235. do you know?
My Chevrolet Master Parts Manual, Rev 5-76, lists the 1909343for:
39-51 All
52-55 Comm (6Volt)
58-59 Ser. 3 (6 cyl.)
60-62 Ser.10 thru 30 (235) (exc. P.G.)
63 4/WD (1st Series) (exc. 261, 283)