Paul Hynes SR-3 modules are a slightly older generation design, still very good regulation with good low noise performance. It looks like one is 15V 2A and the other 12V 3A. Paul typically has adjustment pots inside (certainly my PR-3 modular version does), so the voltage can be adjusted within a narrow range. Mark Grant makes nice cables.

Unless you have any reason to keep them, Paul Hynes PSUs are still in demand, especially now that his mass production company has closed. You could advertise them here but you'll get a wider audience on eBay.