by pbass
Early in my career when I transferred into the NH signal dept,I asked my supervisor as to the disposition of various NYWB signal dept.apparatus and was told some of it(what quantity & exactly what componets they were],were reclaimed by the NH after the closing of the NYWB.This may help to satisfy the discrepancy regarding the different types of semaphores used by both companies.As the Portchester extension progressed,the inventory of older style equipment would be exhausted & a newer,updated style would be utilised.The latter statement is my assumption as to my employment in various depts.and saw first hand as to the changes that occur over time to rolling stock & the physical plant especially when the company is not finacially stable or sometimes something new is tried on a trial basis.