First, please note the following: I will be out of town most of next week and will not have access to e-mail, so the best way to contact me will be 610 453 4148. Now for the ad.
A four inch f/15 Unitron achromat with a Unitron alt-az mount, a Ken Dauzet pier, and a CG-4-type GEM. Also included are a finder scope, 1.25" focuser and diagonal, lens cap and shade, GEM accessory tray, counterweight, and hand controller. All for $1,700 plus shipping/insurance. OTA is very good shape (couple of minor scratches and chips but no dents), objective is excellent, long focal length eliminates almost all color. The OTA and mount are worth the sales price by themselves.
Remember to use the phone # above.