I'm going to try the video method soon. I'm going to try to soak and film the evaporation of the Ronsonol off of multiple stamps at the same time. Ideally this helps conserve fluid. Also sounds more fun that watching paint dry! Maybe I'll upload to YouTube and embed the video in this thread...
The real old-timers did this better. Found this tray in misc. pile at a dealer's table. Compared to the plastic tray, the difference in color is stunning. The old glass tray also has a raised platform such that the fluid runs out to the edges, and can be poured off for re-use.
I have always preferred black glass, it seems to show the watermarks best. Finding black glass trays is often not easy but I found a good source by using the vintage black glass furniture coasters like these...
They are relatively inexpensive; typically listed on eBay for a few bucks. Don
Last night, I saw a video on YouTube featuring the Lighthouse Sherlock watermark detector. Although I have seen the Safe Signoscope mentioned several times in this thread, I saw no mention of the Sherlock and was wondering if anyone has used it and if it performs as advertised. I'm only asking out of curiosity and am not considering purchasing one, I'll stick with Clarity and Ronsonol.
old black glass ashtrays when turned over make good dip trays as they have shallow dishing in the bottom which is nice. I also have old fashioned black sheets of glass backed with green felt on one side with success for larger items. these have beveled edges and must have been commercially available at one time.
In my experience, these watermarks are not difficult to differentiate. So, unless they have large paper remnants, or are seriously damaged,, I don't understand why there is a problem watermarking them.
Quote: In my experience, these watermarks are not difficult to differentiate. So, unless they have large paper remnants, or are seriously damaged,, I don't understand why there is a problem watermarking them.
Yeah. I dont get it. They are not damaged. I think all the paper is off. I guess ill soak them again. Would a pic help?
Quote: Here they are in the fluid. Pretty easy to see the difference, even with less than ideal lighting.
Several different kinds of papers were used on the 1948 stamps. I don't believe Scott mentions this. It could be a source of confusion.
Ok. Tks. Also, Tks for mentioning the paper difference. I took another stab at them late last night and now I'm pretty sure they are Wmk 292 except for one 20pf I think is a Wmk 297 (20pf k kollwitz). The paper - yes I did notice a difference. Some are a thinner, almost see through paper - like the 30 pdf I can't id. It harder due to the lighter paper and a big dark cancel. So if they only used this paper on the '48's then I'm just stuck with one mystery. Going to look more into the paper today to see what it's called.