Mordecai Brown autograph question

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Posted By: Scott Sarian

Hi,

I own the pictured Mordecai Brown autograph, which I've owned (bought framed and matted as seen) for probably 15-20 years.

I am contemplating selling it at this time, and have a couple of questions:

1.) For vintage autographs such as this, which is the best choice for authentication? PSA/DNA vs SGC vs Spence?

2.) Have any similar cut sigs from Brown sold at all recently? I haven't been able to locate any similar items for sale.

3.) Is anyone here familiar enough with his signature to give me your educated opinion?

Thanks!
Scott