Silicone Sheets for Raised Red Scar from BCG Injection?

I would use a combination of IIT and pulsed dye laser for these red scars resulting from the BCG injection vaccine.

Yes, silicone sheeting (without referring to any specific brand) have been shown to be of benefit in management of hypertrophic scars even if they are longstanding. Treatment for 12 hours a day and up to 4 months is usually advised.

Silicone sheeting has been shown to be beneficaial for immature scars (scars that are fairly new). In your case with a scar that is more than 35 years old, I doubt that it would offer any benefit.