The 15 cars #6300-6314 were built in 1926 under AFE #2577, in service 3-31-26 "Built new using second hand trucks" ,meaning that the cars were rebuilt they originally came from the 6000-6097 series of flatcars.
6300 series: Flatcars Gauge:narrow
Cost per group: $10196.85 Cost each: $679.79
Light wt.as built per unit 21700 lbs.
Capacity: 60000 lbs. Underframe: wood
Length over sills: 40'
Trucks: 4 wheel archbar.
(6000-6097 Series info: Built new in 1887 by the D&RGRR, cost $441.00 each.
Light weight per unit 14700 lbs.
Capacity: 40000 lbs.
Underframe: wood
Length over stills: 30'
Trucks: 4 wheel Theilson & arch bar)
6300 Built from 6079, Retired 12/64-AFE#6325
6301 Built from 6097, Retired 12/64-AFE#6325
6302 Built from 6036, Retired 11/70-AFE#7575
6303 Built from 6065, Retired 12/64-AFE#6325
6304 Built from 6014, Retired 4/64-AFE#5688
6305 Built from 6078, Retired 12/62-AFE#5688
6306 Built from 6005, Retired 12/61-AFE#5357
6307 Built from 6021, Retired 12/64-AFE#6325
6308 Built from 6053, Retired 12/64-AFE#6325
6309 Built from 06072,Retired 12/64-AFE#6325
6310 Built from 6076, Retired 12/56-AFE#4345
6311 Built from 6081, Retired 12/57-AFE#4345
6312 Built from 6086, Retired 12/64-AFE#6325
6313 Built from 6089, Retired 12/57-AFE#4345
6314 Built from 6048, Retired 11/70-AFE#7575
AFE # 6325 was completed by 6-1965
Car #6309 was built from work flat # 06072, but thats a story for another day............