A673-Royal Mail “Medieval Life” 1986 First Day Cover Domesday Book 900th Anniv

Title:
Royal Mail “Medieval Life” 1986 First Day Cover – Domesday Book 900th Anniversary Set of 4 Stamps
Category:
Collectables & Art > Stamps > Great Britain > First Day Covers
Condition:
Very good condition (un-addressed, issued 17 June 1986). Minor ageing/toning spot at top of cover as shown in photos. Stamps and cancellation appear clean.
Item Specifics:
Issue Date: 17 June 1986. 
Issue: “Medieval Life” – 900th Anniversary of the Domesday Book. 
Set of 4 stamps: 17p, 22p, 31p, 34p. 
Issuer: The Royal Mail / British Philatelic Bureau, Edinburgh.
Type: First Day Cover (FDC) with nice cachet and cancellation.
No obvious major damage; see photos.
Comes as shown (envelope, stamps, backing insert).
Valuation / Recommended Price:
Based on recent comparable listings:
One listing on eBay UK shows this exact cover listed for approx £2.91 (Buy It Now) recently. 
Catalogue reference: this issue is listed at approx £1.45 for FDC condition in a specialist listing. 
Given condition and collectible interest: a reasonable market value for your cover in very good condition would be around £3.00-£5.00.
Suggested  Listing Price (Buy It Now):
£4.50
Auction Option:
Start at £2.00 with no reserve (or reserve at £3.00) – this gives a potential auction dynamic and still lies below the “Buy It Now” price, which may attract interest