Australian-Coins Forum

Australian Coins, Banknotes and Exonumia => Australian Errors and Varieties => Topic started by: Robster on July 29, 2014, 09:18:34 AM

Title: 1923 Threepenny Brockage.?
Post by: Robster on July 29, 2014, 09:18:34 AM
Reversed lettering on this Threepence. Best description for my records please.!!

(http://i1343.photobucket.com/albums/o787/robster836/001_zps9721f6f8.jpg)
(http://i1343.photobucket.com/albums/o787/robster836/004_zps99acc52b.jpg)
Title: RE: 1923 Threepenny Brockage.?
Post by: markn on July 29, 2014, 09:31:24 AM
That's cool.  Are the ghost letters incuse or in relief?
Title: RE: 1923 Threepenny Brockage.?
Post by: Robster on July 29, 2014, 09:42:29 AM
Seems to be incused, cuts into 2 and 3.!
Title: RE: 1923 Threepenny Brockage.?
Post by: markn on July 29, 2014, 10:00:37 AM
If it's a brockage then it's been struck twice, first as a "brockage" and then as a normal coin.  It could be die clash but the letters are in the wrong spot compared with reverse.  Maybe the dies were dropped on each other?  Is it upset at all?
Title: RE: 1923 Threepenny Brockage.?
Post by: nealeffendi on July 29, 2014, 10:13:51 AM
Would a brokage show incuse marks into the 2 and 3? The striking should obliterate the incuse bits in those digits Might it be PMD where  somebody hit another coin on top of this one?
Title: RE: 1923 Threepenny Brockage.?
Post by: markn on July 29, 2014, 10:21:04 AM
Quote from: 'nealeffendi' pid='55774' dateline='1406594631'Would a brokage show incuse marks into the 2 and 3? The striking should obliterate the incuse bits in those digits Might it be PMD where  somebody hit another coin on top of this one?

If it's brockage then those letters would be incuse and show up as weakness on the letters struck over the top of them.  PMD is certainly a possibility that shouldn't be discounted though.  What's the obverse look like Robster?
Title: RE: 1923 Threepenny Brockage.?
Post by: Robster on July 29, 2014, 10:31:56 AM
No discernible upset but excessive wear at 6 o'clock, planchet seems to be slightly 'thinner' in this area plus faint crack above IND.
(http://i1343.photobucket.com/albums/o787/robster836/006_zpsd359e6e1.jpg)
Title: RE: 1923 Threepenny Brockage.?
Post by: markn on July 29, 2014, 10:44:05 AM
I think the damage at the bottom of the obverse lends credence to Neal's PMD theory.  Can you put a microscope on the 3 of the date in the region where it crosses with the incuse letter and see if there's evidence of metal displacement?
Title: RE: 1923 Threepenny Brockage.?
Post by: Robster on July 29, 2014, 11:28:37 AM
Certainly has metal displacement on both the 3 and 2, will mark it as pmd. until I catch up with Mark. Thank you both for your time.!! :good:
Title: RE: 1923 Threepenny Brockage.?
Post by: markn on July 29, 2014, 11:36:45 AM
Quote from: 'Robster' pid='55781' dateline='1406599117'Certainly has metal displacement on both the 3 and 2, will mark it as pmd. until I catch up with Mark. Thank you both for your time.!! :good:

I look forward to seeing it :)