I just called a Legacy Engineering Group at 917-416-8893. After a very long ring time, I got the voice mail of Curt Vendal, my contact from MicroProse. I left him a voice mail with the order number, order date, work phone, and cell phone number. Again, I'm not holding my breath. The coupons are not transferable so "a replacement that belonged to an employee" would have been useless.
Regarding the expiration of the coupon, I was told it was used when I placed the order, and was always of the opinion that the MPI-500PT was eventually going to arrive. That's what I was told so I'm still waiting. We'll see if I hear back from Curt.
Strange thing though... the Legacy Engineering Group web site seems to have all the connectivity of the MicroProse site; none.
P.S. I just checked the Government Site. "Your Coupon has been used to purchase a converter box and is no longer active."