Hi there,
I am wondering if I could have some help from the other collectors out there on the identities of two precancels, and an explanation regarding the lines on the third? Thanks folks!
Here are the first two-
Scott #2123(x5): 3.4c School Bus- P-10 Vert. /Untagged
Precancel info: Nonprofit Org. CAR-RT SORT

Scott #2128(x5): 8.3c Ambulance- P-10 Vert.
Precancel info: Blk. Rt. CAR-RT SORT /Untagged

Scott #1606(x2): 30c Morris Township School- P-10˝ x 11
Two shiny black lines----> missing info, graphite lines, training stamps?
Thanks for taking the time to read this thread, and I look forward to any and all feedback, observations, opinions, or questions regarding these stamps.
I appreciate the help once again,

Skilo54