(18 May 2023, 3:02 pm)ne14ne1 wrote I see 6198 has flush glazed windows (not sure of the correct term):

https://flic.kr/p/2oBd4iA


Edit: because it was originally one of First London’s before being absorbed into the GAL fleet: 

https://flic.kr/p/aMSbN2

Bonded glazing I believe, Gasket glazing referring to individual windows separated by bodywork (like pretty much every Stagecoach bus)