WTS/WTT: EDC 501J DC Voltage Standard OPT D, AM-2

[gilbenl]

Looking to sell or trade my EDC 501J DC Voltage Standard. +/-100mV-10V. Has Opt D (10ppm resolution on 100mV range) and AM-2 (front panel binary output switches). Purchased off eBay as not working-Showed overload condition on all settings. Simply needed jumpers on the output sense. Cleaned the contacts on the cards and ICs. Fully functional and in good shape. No recent calibration, but its been close enough for my purposes.

Here's a similar unit belonging to another user. This has the AM-1 output selection switches (MSD->LSD): https://www.eevblog.com/forum/testgear/pretty-good-surplus-score-edc-501-j-programmable-dc-voltage-standard/

Asking $500 $300 US or best offer and will consider full or partial trade. Will do a 1:1 trade for a Fluke 731B

Items I'm interested in:
Resistance standards
Agilent 34401A
Fluke 8845A
HP 735A DC Transfer Standard
Fluke 731B DC Transfer Standard
Vintage test equipment