Great stuff JR. That will make constructing a worthwhile disc pattern a fair bit easier

Heres another lot from the mob I bought my detector from. Not sure how accurate they are ...
Pull Tab (push-in type) - 12:14
Pull Tab (beaver tail type) - 12:18
1c - 12:44
2c - 12:46
5c - 12:07
10c - 12:14
20c - 12:23
50c round (80% pure) - 01:46
50c - 12:28
$1 (aluminium/bronze) - 12:38
$2 (aluminium/bronze) - 12:38
$5 - 12:46
Half penny - 12:45
Penny - 12:47
Three pence (92.5% pure) - 12:40
Three pence (50% pure) - 12:28
Six pence (92.5% pure) - 12:45
Six pence (50% pure) - 12:36
Shilling (92.5% pure) - 11:47
Shilling (50% pure) - 12:42
Florin (92.5% pure) - 01:47
Florin (50% pure) - 12:46
Crown (92.5% pure) - 01:40
1/2 Sov - 12:21
1 Sov - 12:30
Cartwheel penny (1d & 2d) - 03:45
CR