Help identifying outrigger bases

[mcny]

I have 2 older high quality outrigger bases that I would like to sell. I looked online to try and determine a fair price but the only ones I found like this were $950. for a pair including the riggers. They were in very bad condition including a split tube. I can't believe they are worth anywhere close to that but don't want to give them away. If anyone recognizes what brand these are so I can get a better idea what they are worth I would really appreciate it. Thanks.