A681-Germany 1963 “Flora und Philatelie” 15 PfennigFlower Stamp on Envelope – B

Title:
Germany 1963 “Flora und Philatelie” 15 Pfennig Flower Stamp on Envelope – Bodensee-Motorschiff „Mainau” Advertising Cover
Category:
Collectables → Postage Stamps & Postal History → Europe → Germany
Condition:
Used postal cover/envelope with German stamp (15 Pfennig) and illustrated Bodensee-Motorschiff “Mainau” ship cachet. Some signs of age (corner wear, light toning) but overall good collectible condition.
Item Specifics:
Country/Region of Manufacture: Germany
Year of Issue: 1963 (stamp: “Flora und Philatelie”) 
Denomination: 15 Pfennig
Usage: On-cover (postal use)
Cachet/Illustration: Bodensee-Motorschiff „Mainau” (Lake Constance motor ship)
Condition of Stamp: Cancelled, used
Envelope Size: Approximate (please specify measurement)
Features: Addressed to England (R.W. Young, Dagenham Essex)
Rarity/Note: Early German floral topic stamp series; cover adds postal history interest
Valuation & Price Guidance:
Based on comparable listings for the 1963 Germany “Flora und Philatelie” series: single used stamps listed for very low values (e.g., ~US $1.05) on eBay.  Because yours is used on cover with special ship cachet, postal history element adds modest premium.
Estimated value: £5 to £10 (for a mid-grade collectible cover)
Recommended “Buy It Now” price: £12.95
Auction starting price: £4.99 (no reserve)
Or you might set a Buy It Now and also enable Best Offer.
lenvelope addressed to England. It bears a purple cachet of the Bodensee-Motorschiff “Mainau” (Lake Constance motor ship) with “Baujahr: 1928 – 113 t Heimathafen: Konstanz” printed. The envelope is used, with postmark visible, and in good overall condition given its age. A nice piece for the topical collector of ships, lakes, or German flora/philately sets. Please see photos for condition and cancel details."