For sale 5 insulators of Polish production, prices including SHIPPING to the USA / Canada, from the left: 1. CD 565.1 signed H.R.N on the front and PNT in circle on the back, in aqua color, small glass defect on the lower edge of the inner skirt, need a cleansing, 28 USD. 2. CD 565.1 signed V.W, light aqua, undamaged, $ 35. 3. CD 578.1 from J. STOLLE "NIEMEN" clearly visible on the lower front skirt, aqua color, no damage, $ 45. 4. CD 579 weak but clearly signed H.L, I could not find its producer, no damage, nice blue aqua, 45 USD, 5. CD 579 signed V. W., nice blue aqua, no damage, 45 USD. I would be happy to send you more photos if needed. PayPal preferred.