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Vintage Park Sherman Postal Scale – “Slow-K Potassium Chloride” CIBA Promo – 1980s Blue Desk Display
Condition: Excellent vintage condition with minimal wear consistent with age. Fully functional spring balance with intact rate chart and rotating thumbwheel for calibration. Clear display windows and legible postal rate tables dated February 17, 1985.
Made in Hong Kong for Park Sherman Div., Ketcham & McDougall Inc., Roseland, NJ, USA (Patent No. 4,591,010).
🧭 Details & Features:
• Dual-range high-resolution utility scale (Model No. 60700A)
• Displays 1st Class / Priority / 3rd Class rates for U.S., Canada & Mexico
• Rotating thumbwheel calibration (fully working)
• Blue molded plastic housing with Slow-K #1 for K balance promotional graphics
• Measures approx. 4.5” × 4.5” × 4.5”
• Weighs up to 32 oz (2 lb)
🧪 Background:
This piece was a pharmaceutical promotional item distributed by CIBA in the mid-1980s to advertise Slow-K (potassium chloride) supplements. These branded scales were often given to doctors and pharmacists and are now collectible for their crossover appeal — vintage office tools, postal memorabilia, and medical advertising.
📦 Condition Note:
Clean, sturdy, no cracks or discoloration. The rate card is vivid and the tension spring functions smoothly. A perfect display piece for vintage medical or postal equipment collectors.
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🔖 Category & Keywords:
• Category: Collectibles › Advertising › Pharmaceutical › Other Pharma Ads
• Keywords: Park Sherman, Slow-K Scale, CIBA, Pharma Promo, 1980s Desk Accessory, Made in Hong Kong, Retro Postal Scale, Medical Advertising Display, Vintage Doctor Office Collectible
