Please Take Note:
The part number 29P-500A is the vintage original plastic ( bakelite? ) spool.
The inventory of 29P-500A are forty plus years old and are likely dry rot to some degree and fragile.
It is recommended to use these spools for collector refurbishing of reels only.
If you do choose to use these spools to fish, it is highly recommended to back the spools
half full with a soft cotton twine backing to absorb any pressure from the mono-filament line you use.
The use of braided line on the 29P-500A spool is a recipe for disaster.