I was able to find HT Hellboy used but in Mint condition for $300.00 on Ebay. The Silicon packet was no longer in the box and as shown in my photo's a lot of the gloss is almost gone from the rubber otherwise, it looks great.
So maybe moisture is the culprit to long term ill effects on the rubber body. I was going to hit mine up with some vaseline intensive care lotion lol !
As for my younger brother he took my first HT Hellboy 2 years ago when he went off to school and I was away from home. There was a huge feud and he eventually sent me $150.00 and it was already going for way more. He rationalized that because I left it in the box and never displayed it -I couldn't of really wanted it. That's family for ya -