Richie Allen/John Herrnstein dual signed 1964 Topps
 

Do you guys have any idea what a Richie Allen RC signed by both guys would go for these days? I've seen past sales all over the place. Thanks!

There aren't many sold on ebay, but a raw one sold for 600 and a BAS one sold for 800, both by auction. My guess is today a PSA slabbed would be 700-1000 BIN price just Authentic, and more with a 10 auto grade. A PSA 6/ Auto grade 10 example sold for almost 2400.

Thank you!

If you don't mind, where did you find those sales?

If you're an ebay seller you get access to sales data going back three years. I just searched for the card in question. Unfortunately I can't link them because the actual listings aren't archived past 90 days.

I have one waiting for Beckett to return slabbed, which ill be selling

Just got this back today from Beckett