Value Of Ceylon KGV High Value Blocks - 'Inverted Watermark Variety'

Good day to all,
This is my first post in this forum. I was recently sent these pics from a relative's collection. The blocks are marked inverted in pencil on top. Any idea of their worth?

Many Thanks
Huz


*** Moved by Staff to a more appropriate forum. ***

The value is quite significant, if the Inverted notation is true and actually means inverted watermark. Assuming watermark Multiple Crown CA, my older Stanley Gibbons has the following values for EACH stamp:

10R: SG 318 at 70.00 Mint
If Inverted, SG 318aw 180 Mint

5R: SG 317 at 19.00 Mint
If inverted, SG 317bw 85.00 Mint

Even if not inverted, very nice pieces. Thanks for posting.

I have a 2013 Gibbons, and the values are higher for the inverted watermark.

SG 317 5R is priced at £19 (or more depending on the paper color) and at £95 with the watermark inverted.

SG 318 10R is priced at £70 and at £225 with the watermark inverted.

The two pieces you have shown would best be sold at auction from one of the higher end auction companies. If they are in good condition they should sell for a considerable sum.

Thank you for your kind replies.The 10r block (Die I) is in top condition but unfortunately the back of the 5r sheet has considerable amount of foxing. Nevertheless haven't seen bigger blocks inverted!

Twinklefeet: If you read this please respond. I need to ask you a question via email.
cNA

Canadian. he can not use Email yet

Peter

Very nice blocks ,very unusual items .

The question about value is a different story . The question who wants them is a more complicated issue .

Those stamps in my opinion need first to be expertized and a cert issued after they are broken down into singles and blocks of four {maybe a block of 6 with the margin markings } before being placed up for sale.

When you see a catalog value of $200.00 for a rare item like this expect to get about 1/10 of catalog after certification and brokerage fees . These stamps could take years to sell if your demanding a certain price also .