PB promoted its meter machines and provided booklets to USPS customer. Here offers a pair of PB booklets with same design in blue and yellow colors. Customers can enjoy a 60-day trail from PB for its meters.  Very interesting items.

Buyers pay $1.5 within US or $3 worldwide at buyer's risk. Insured or registered mail is optional with additional cost. Shipping to US with tracking is $4. Registered airmail will add $16 for international buyers. You are agreed to take the risk of lost mail if you do not select tracking/insurance/registration. Insurance or registration is required for invoice at $100 or above unless agreement reached with buyer. Will combine shipping.