Libbey Rock Sharpe 'Cosmos' Etched Crystal Champagne/Tall Sherbet Coupe
Libbey (Rock Sharpe / Sharpe Division) · Kitchenware & Appliances > Drinkware
Era / Decade
1940s-1950s. The 'Cosmos' pattern (Number 3005-2) was a staple of the Rock Sharpe line mid-century, characterized by the grey-cut floral design and faceted stem.
Material
Heavy lead crystal glass with a grey-cut (frosted/etched) floral motif and a cut-lattice 'diamond' border around the rim. High-quality clarity with a ringing sound when tapped.
Condition
Very Good to Excellent. The glass appears bright with no cloudiness. The sawtooth/notched rim is prone to flea bites, but no major chips are visible in the photo. There is minimal shelf wear on the base.
Demand Level
Moderate. Vintage 'coupe' style glassware is currently trending for home bars and 'Dark Academia' aesthetics, though single stems sell slower than sets.
Resale Value
Estimated Resale Value
$8.00 - $22.00 (Per single stem, though sets of 4 or 6 command higher premiums per piece)
Estimated Retail Value
$15.00 - $20.00 (Original inflation-adjusted or modern equivalent price per stem)
Comparable Sales
Individual stems in this pattern typically sell for $12-$18 on eBay. A set of 4 recently sold for approximately $65 plus shipping on a dedicated vintage glassware site.
Description
Exquisite vintage Libbey Rock Sharpe crystal champagne or tall sherbet coupe in the elegant 'Cosmos' pattern. This stem features a sophisticated grey-cut floral design on the base of the bowl and the foot, complemented by a brilliant diamond-cut lattice border near the rim. Standing on a multi-faceted hexagonal stem, this piece captures light beautifully. Perfect for vintage-style cocktail service or as a refined dessert vessel.
Key Features
Desirable mid-century 'Cosmos' pattern; faceted stem which is more collectible than plain versions; multi-use functionality for champagne, martinis, or sherbet; vintage Libbey quality; distinct 'gray cut' flower detail.
Authenticity Indicators
Libbey Rock Sharpe pieces are typically unsigned, but the specific combination of the '3005' stem and 'Cosmos' floral etch is highly documented in collector guides. High confidence in pattern identification.
Flaws to Note
Look for tiny 'flea bite' chips along the notched top rim and light scratching on the interior base of the bowl from spoon use. Check the base for 'ringing' or scratches.
Selling Guide
Where to Sell
Etsy (best for vintage tabletop), eBay (broadest reach for replacement glass collectors), or Facebook Marketplace (if sold as part of a larger set to avoid shipping risks).
Selling Tips
Use keywords like 'Mid-Century Modern', 'MCM', 'Champagne Coupe', and 'Depression Era Style'. Backlight the glass against a dark background to show the floral etching clearly. Double-box for shipping to ensure it survives transit.