Yes, I think I know what you're talking about and I replaced all of these on my 1960 Amazon-S 4-door. Likewise, mine were ineffective and the weather stripping was torn or missing. Since I was changing the color on my Amazon, I decided to totally replace all of the existing guides. You'll find the guide is a single unit, 4 pieces per front door and rear door. The metal "U" channel has the black weather stripping glued in place, held by the metal/chrome strip. These guides are held in place with metal clips and I used 3M adhesive to ensure they didn't move.

I was able to buy generic guide material, along with the inner window fuzzie strips (bottom of window on inside metal trim plates) at an auto restoration store. Volvo used the same OEM as was likely used in North America, along with the shinny metal outside trim. The only kicker is that you must remove the metal attachment brackets and reattach them with pop rivets on the new guides. Use the old guides as templates and mark the position of the brackets before you remove them.

Another option, although more expensive is to buy remanufactured guides specifically for your Volvo. These are sold by most of the Volvo aftermarket resellers (Vintage Import Parts, Swedish Treasures, VP Autoparts, GCP, CVI, ScandCar, etc). Here's a picture to help you decide how many you wish to replace, followed by the before and after shots.