Yes, each speaker is 8 ohms. Your story reminds me of a friend at work. We were talking about music gear, and he used to play keyboards. He mentioned that he built a homemade speaker cabinet that also served as his keyboard stand, and that he had installed an old Fender amp in the homemade cabinet. I asked if he wanted to sell the amp/cab and he said yes. The amp ended up being a 1959 Fender twin. Unfortunately the original tweed cabinet and Jensen speakers were long gone, but I restored the amp as best as I could. And your serial number 160073 is one of the earliest examples I have seen. Probably from early 1961.