1952 Topps #131-190 Gray Backs

[Lgarza99]

I love reading all the research and possible reasons for this 52 Topps variations. I am just a newbie on this issue so I have no insight other then this.

I work in a print industry and I have been made aware of the following:
1. Paper suppliers raw stock variations.
2. Pressman pulling the incorrect stock to keep his press running, usually in a small pocket, before catching the mistake. Thus small quantity of defect work.
3. Paper trials performed during live runs, and trials are usually flagged but may have not been all removed. Trials performed to test run ability of a new stock to reduce production cost.
4. As far as distribution? A producing plant may have earmarked them for other market release in other products as they did not meet quality level for intended 1952 Topps baseball release. As in the lack of a gloss surface? The gloss may have been applied on a seperate pass? If so, Topps may have not wanted to add cost to this production anomaly.

Just food for thought on a few production floor typical scenarios that may have occurred.

Thanks,
Luis