Remington 150/175 anniversary guns

Can anyone tell me what models were produced as Remington 150th and 175th anniversary guns and what their production numbers per model were? I think that I have also seen Remington 180th anniversary guns. What about models and production numbers on these? Were the 180th ones sold as a set? If so did they have a special serial number sequence (different models with same serial number, etc.)?
Thanks,
Doug