Looking for PDP-8 G603 "Memory Selector Matrix" boards (or dec T-2052 transformers)

I realize it's a long shot, but does anyone have: - Any spare T-2052s (or know of a source) > - Any idea what the T-2052 *was* so I can try to replace them. I haven't > found much detail as of yet. Good news on this front! I had previously obtained a data sheet for the T2037, a similar transformer. I extracted 4 each T2037 and T2052 from a broken G228, and today I was able to get measurements off of them: T2037: A: 230uH, 170 mohm primary, 42.9uH 100 mohm secondary B: 220/170, 41.6/100 C: 232/170, 43.8/60 D: 231/170, 43/80 These are consistent with 16 turns and 7 turns of #33 wire, wound on an FT37-77 toroid per the instructions on the data sheet, and also with the 220 uH /43 uH 20% specs that appear there. Here are the T2052 measurements: A: 597/320, 597/320 B: 530/270, 530/270 C: 34/1040, 24/680 D: 551/280, 551/280 Ignoring "C", which is quite likely broken in some way, these are consistent with a 25 turn 1:1 transformer. I'm not sure what they are wound with, as #33 wire should give a lower DC resistance. (#34 is closer. It's also possible that they changed cores, but I suspect that they are also wound on FT37-77 cores.) It's possible that a fairly standard modern 1:1 pulse transformer could be substituted. The 78615/2JC, for instance is 500uH, 1:1 if you ignore the center tap pins. Vince