Premium For Plate Block Of 6?

I have been selling several plate blocks on ebay, these are from my deceased father's collection; mostly 1920's -1940's. About 90% of his collection is in MNH plate blocks of 6. I don't have access to Durland's and unless someone has sold a plate block of 6 on ebay, I have no way of knowing if buyers are paying a premium for 6 over 4.

An example - Scott 699, PB's of 4 sold on ebay for $11-$58 but no PB's of 6 are listed for sale, and there are none in sold listings. I don't want to 'make up' some kind of premium associated with a PB of 6 and have the listing ignored because of the price. Any ideas on pricing these in general?

http://img.photobucket.com/albums/v...66db4047.jpg

The general rule for U.S. plate blocks has been that plate blocks of 6 (usually center number blocks) are for flat plate stamps and plate blocks of 4 (usually corner number blocks) are for rotary press stamps. Some collected plate blocks of 6 for rotary press stamps just in case they weren't sure what it was.

Thanks! So should I separate the two extras and sell them as singles?

No. The bigger the multiple, the better it usually is. The above is just the minimum of 6 stamps in a complete flat plate plate block and the minimum of 4 stamps in a complete rotary press plate block.

Concerning the C10s.
They are not plate blocks.
1) No Plate Number
2) Not in a block of 4 (2x2)

I would break them up into singles.

Art

Art, I had two listings for C10s, one was a plate block of 6 and the other was two vertical strips of 4 each, so I'm not sure what you are referring to. Did you mean I should have broken the strips up and sold them as singles? I know the difference between a strip, a block and a plate block- but I am struggling with pricing plate blocks of 6 unless others have been sold so that I can gauge the going price of them.

I apologize for my lack of knowledge here, my dad was the stamp nut, not me. When I was little he gave me an album and a bunch of MNH singles, he told me not to do anything with them until he helped me, I got impatient and licked them all and matched them up to the album pictures, he never brought up the subject of stamps around me again =)

2sleepy, Greetings:

Who among us has not licked them into place? Good on you, lad, for stepping up.

May I, on behalf of your dad, forgive you?

Cheers,

/s/ ikeyPikey