Some of my 'silvertops' do not have Silvertops. Can anyone date or give any info about the odd ones out in the pic? (the odd ones are the 7.5mm, 10mm and 26mm) which all have:
a) Black tops
b) raised lettering, rather than engraved
c) Red lettering rather than orange.
The 26mm has a Celestron sticker and a -V- symbol on the barrel.
Any ideas ?
Thanks,
Malcolm.
a) Black tops
b) raised lettering, rather than engraved
c) Red lettering rather than orange.
The 26mm has a Celestron sticker and a -V- symbol on the barrel.
Any ideas ?
Thanks,
Malcolm.
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