PL Signals on the Punkin' Vine: What Year?

[NW Mailing List]

Can anyone confirm the year in which Position Light Automatic Block Signals were installed on the Punkin' Vine? I think it was 1928. I have a piece of original PL equipment that I want to letter with an identification, but want to make sure before I uncork the paint. .. 

-- abram burnett 

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