Lot
3033 
Boston Zone Number System postmark collection, 1920-53. Specialized collection of approximately 145 covers organized and written-up on display pages including maps and detailed listings of the system; including zone postmark varieties, EKU's and LKU's, scarce dials including only known examples, hand and machine cancellers, zone number errors, etc., mostly 1920's covers; original owner spent 10 years and over $4,000 assembling this interesting postal history collection, a must see to appreciate. Estimate $1,000 - 1,500.
Realized: $725