Slugman my understanding when Ithaca was going through hard times the M37 was stopped. When it started back up is was called the Model 87 back in 1987.As far as I know that is accurate.I had a Featherlight with 2 3/4"chamber. I sold it when I picked up a 37 with 3" chamber.The 3" mag model I have has a high gloss finish very similar to a Browning or Rem 700BDL.Really a nice gun.I just looked it up in a Gun Traders guide.The model 87 ran from 1986 and discontinued in 1996. Some of the Model 87 were discontinued even earlier then 1996.I just found a Note on that page.

Previously issued as the Model 37,the model 87 guns listed below were made available through the Ithaca Acquisition Corp.. From 1986-95.Production of the Model 37 resumed under the original logo in 1996.

I hope that clears your question up.

Ruger Redhawk