HP2100A core memory (period) prices

Someone wrote... Yes, but a few things to also consider.... The 1969 pricing is for the wrong product technically. It was for memory for the 2116, which is decidedly NOT a 2100A or 2100S and your contact was looking for memory pricing for the 2100A/S specifically. It is entirely possible that memory prices were changed substantially when the (albeit) same memory board was repackaged with the 2100 so I'd suggest considering the 1977 2100 memory pricing a bit more heavily. This is also of interest because the 1969 pricing was for a complete system and the delta was being deducted as the memory price. In addition, I'm not sure it would be completely correct to say that the 1977 pricing was for an "old product that had been superceded" as it was not really a dead product at the time. I should point out that the 2100A/S was not replaced with the 21MX boxes immediately (or shortly) after the 21MX came out. They were all marketed at the same time for a good while. More interesting to note, the 2100A was introduced in about 1971, and was not discontinued till approximately 1980. The first of the MX series was introduced around 1974. As you can see, there is a quite substantial period when both 2100A/S and 21MX systems were marketed. Just some thoughts for consideration, the final analysis will be somewhat subjective. Jay West