SOUVENIR BOTTLE OPENER CELEBRATING 100 YEARS OF PB Produced in the UK, 1978. hr> p> PB membership had declined to an all-time low by the time of the movement's centenary in 1978. That year 1,000 of these souvenir bottle openers were produced by the PB Historical Society and made available in the gift store of the museum at a cost of two pounds each. When the museum closed nearly 20 years later, the 950 that remained unsold were purchased at auction and recycled.