...there's a LOT out there that isn't searchable on the internet...so, it's a bit premature to think this is the only one...
...also, 'early Tide Water products' were orange, black and white...Tydol was a Tide Water product dating to the 1910s, and Flying A was an Associated product, introduced in 1932...Associated products used a green like this...this tells me that your base is from some time after Tidewater and Associated became affiliated in 1936...possibly an old Tide Water base was painted green after the merger?
...you should read this:
https://en.wikipedia.org/wiki/Tidewater_Petroleum