Hampden White Alloy Mainsprings JA-303
$39.00
JA-303
Size 18, factory # 1696, width in mm 2.9, strength in mm 0.21, length inches 21-3/4, end T
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Hampden White Alloy Mainsprings JA-305
$34.95
JA-305
Size 16, factory # 2696, width in mm 2.9, strength in mm 0.19, length inches 21-3/4, end T
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Hampden White Alloy Mainsprings JA-306
$34.95
JA-306
Size 16, factory # 3696, width in mm 2.7, strength in mm 0.2, length inches 21-1/2.
While factory number #3696 are shown above in the 66 year old illustration as having a T end, the mainspring JA-306 is a T-Brac end.
I have found 70 year old 70 writing saying use Illinois springs (47314, 47315, 47316) modern day replacement is # JA-410
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$34.95
Hampden & Illinois White Alloy Mainspring JA-410| | Size 16, factory # 3696, width in mm 2.7, strength in mm 0.19, length inches 21, end T-BRACE Same as Illinois 16 size 47314
Swiss Made White Alloy Mainspring | |
JA-410
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Hampden White Alloy Mainsprings JA-308
$34.95
JA-308
Size 16, factory # 4697, width in mm 2.7, strength in mm 0.18, length inches 21, BRACE Single Tab end
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Hampden White Alloy Mainsprings JA-309
$34.95
JA-309
Size 16, factory # 5697, width in mm 2.7, strength in mm 0.165, length inches 21-1/2, end HOLE
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Hampden White Alloy Mainsprings JA-310
$34.95
JA-310
Size 12, factory # 6696, width in mm 1.8, strength in mm 0.18, length inches 18-1/2, end T
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Hampden White Alloy Mainsprings JA-311
$34.95
JA-311
Size 12, factory # 12696, width in mm 1.4, strength in mm 0.175, length inches 19, end T
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Hampden White Alloy Mainsprings JA-312
$34.95
JA-312
Size 6, factory # 8696, width in mm 1.75, strength in mm 0.165, length inches 16-1/4, end T
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Hampden White Alloy Mainsprings JA-314
$34.95
Size 8/0, factory # 15696, width in mm 1.25, strength in mm 0.14, length inches 8.25, end T
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Hampden White Alloy Mainsprings JA-304
$34.95
JA-304
Size 18, factory # 1696, width in mm 2.9, strength in mm 0.23, length inches 21-3/4, end T
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