Crown for Citizen 4-720377 4-720385 4-720393 4-720407 4-720431 4-720440 4-720458 the gear is for routing

the gear is for routing the indicator ring  or inner bezel

The right one is the blue AR coating

Link measures 19mm Lug size is 19 mm

The Ar coating is not visible at some angles

Please do not hesitate to contact us if you have any further question

Crown for Citizen 4-720377 4-720385 4-720393 4-720407 4-720431 4-720440 4-720458 the gear is for routingNew Crown for Citizen Crown for Citizen 4 720377 4 720385 4 720393 4 720407 4 720431 4 720440 4 720458 it has a new gasket inside. Please do not hesitate to contact us if you have any further questions. Please look at our other listings, If you want any kind of our items in a larger quantity, feel free to contact us. We stand by our products 100% and if by any chance you are not satisfied with your purchase, We will gladly accept returns with no