https://www.numismatica.info.ve/en/coins/mpb1r-aa21.htm
Piece mpb1r-aa21 : Coin of 1 Real : Date 1941 : Province of Barinas
Information about Coins from the Province of Barinas with denomination 1 Real, Piece Code mpb1r-aa21, classified as Design A, Type A
piececoin
https://twiki.di.uniroma1.it/twiki/view/Programmazione1/AA21_22/WebCreateNewTopic?topicparent=WebSearch
WebCreateNewTopic Programmazione1/AA21_22 TWiki
webcreatenewtopictwiki
https://www.hyspeco.com/itemdetail/PTR321-190-AA21-C
PTR321-190-AA21-C - PNEUMATIC DIVISION - ROTARY ACTUATOR 250 PSI
PTR321-190-AA21-C,,PNEUMATIC DIVISION,,ROTARY ACTUATOR 250 PSI,Hyspeco
pneumatic divisionrotary actuatorpsi
https://www.assaabloy.com/id/en/solutions/products/mechanical-hardware/panic-exit-device/ansi-exit-device/aa21-series
AA21 Series | ASSA ABLOY
Mechanical Hardware; ANSI Exit Device; Panic Exit
seriesassaabloy