A602-1989 Royal Mail “Industrial Archaeology” First Day Cover (FDC) Museums Ye

Title:
1989 Royal Mail “Industrial Archaeology” First Day Cover (FDC) – Museums Year UK Set
Category:
Stamps → Great Britain → First Day Covers
Condition:
Used / Collectible condition — first day cover with postmark dated 4 July 1989 (Telford) on envelope; stamps affixed and cancelled. Envelope shows minor age-spots and the flap has been opened (see images).
Item Specifics:
Issue Date: 4 July 1989 
Issue: “Industrial Archaeology” (Museums Year 1989) set of 4 stamps (19p, 27p, 32p, 35p) 
Postmark Location: Telford (First Day of Issue)
Envelope: Illustrated cover with “Industrial Archaeology – Museums Year 1989” design
Mint status: Cover has been postally used (cancelled) so it is “collectible used” rather than pristine un-used.
Valuation / Recommendation:
Based on recent listings and catalogue values: many copies of this FDC are listed in the UK market for around £1.45 to £3.00.  Considering your cover’s cancels, age spots and minor wear, a fair market value might be in the £2 to £4 range.
For listing, you might consider the following guidance:
Recommended “Buy It Now” price: £4.99
Auction starting price: £1.99 (with no reserve or a low reserve)
Listing Price:
Buy It Now: £4.99
Or Auction: Start at £1.99 with 7-day duration.
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