This isn't my idea, I only bought a holster with it. (Colorado Saddlery). All the normal stuff was done, and I assume it was BlackRocked. But the seller stuffed the inside, where the gun would go, with plastic grocery bags. Sounded dumb until I realized even if I hated them, they did a good job. The holster didn't collapse and held the shape I wanted.

Many of the steps we see all can work together to make your holster better. I almost didn't open this thread because I pretty much think selling a vintage holster is heresy. But the steps for storing one are pretty similar to getting one ready for sale. Another thing you might consider is buying ziplock bags. Yes, the big ones. Then isolating each holster in its own airtight container. It prevents cross contamination by mildew or mold.

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Dick Burg