Original Ruger Birdshead Vaquero Question?

Back in the early 2000's I bought an original vaquero birdshead in 45 colt and sold it. I have regretted that ever since. I have found another one but it has a 4 5/8" barrel. I seem to remember my gun haveing a 3 5/8 barrel. Can anyone verify the barrel lengths that ruger produced these in? Thanks in advance.

They made both the 3 3/4 and 4 5/8. The 4 5/8 I show as an AcuSport Exclusive. I bought the 4 5/8 to match my wife's in .357, then had to buy the .32 H&R Single Six to go along with the other two.

Dana